JP4537531B2

JP4537531B2 - Shower head with water purification function

Info

Publication number: JP4537531B2
Application number: JP2000120072A
Authority: JP
Inventors: 壽雄高城
Original assignee: Kotobuki Tsushou Co Ltd
Current assignee: Kotobuki Tsushou Co Ltd
Priority date: 2000-04-20
Filing date: 2000-04-20
Publication date: 2010-09-01
Anticipated expiration: 2020-04-20
Also published as: JP2001303635A

Description

【０００１】
【発明の属する技術分野】
本発明は、台所または厨房、洗面所あるいは風呂場等で用いられ、使用時に吐出する水および／または湯を浄化する能力を具備した浄水機能付きシャワーヘッドに関する。
【０００２】
【従来の技術】
従来、洗面所あるいは風呂場等で用いられる洗面装置やシャワー装置等に取り付けられ、水、湯、または湯水混合水（以下、単に混合水という）の水質浄化能力を具備したシャワーヘッドには、例えば特開平 9−299832号記載のシャワーヘッドがあった。
このシャワーヘッドでは、把持部内に浄水部材を設け、把持部のヘッド本体に近接した位置に流路切換部材を設けて、片手で流路を切換えることができるようにし、この流路切換部材により浄水部材を設けた方の流路と浄水部材のない流路のいずれか一方を選択して、選択された流路に供給された水を流すことにより浄水と原水のいずれか一方が吐出できるようにしている。
そして、この流路の選択には、ヘッド本体の下端部（把持部上端部）に複数の開口を開設した固定部材を挿嵌し、固定部材の開口開設間隔と同一間隔で形成された複数の切欠き部を有する切換円筒部を、固定部材に対して相対的に回動可能に設けて、切換円筒部に固定された操作摘みを指で操作することによって、切換円筒部の切欠き部を固定部材の開口位置におけるいずれの開口に合わせるかにより、流路の選択を行わせるようにしている。
【０００３】
〔問題点〕
従来の片手で浄水と原水とを切換使用するシャワーヘッドでは、切換円筒部に固定された操作摘みを指で操作することによって、切換円筒部の切欠き部を固定部材の開口位置におけるいずれの開口に合わせるかにより、流路の選択を行わせるようにしているため、複雑形状の流路切換部材が必要となり、また、操作についても、指を把持部の周方向へ振らなければならないため操作性が悪く、不自然な力の入れかたをしなければならない。
このため、より操作性が良く、部材の形状も簡単で、流路切換構造も簡単な流路切換機構を有するシャワーヘッドが望まれていた。
【０００４】
【発明が解決しようとする課題】
本発明は、従来の技術における前記問題点に鑑みて成されたものであり、これを解決するため具体的に設定された課題は、操作性が良く、原水と浄水との流路の切換が容易であり、部材の形状も簡単で、流路切換構造も簡単な流路切換機構を有し、取扱容易かつ製造容易な浄水機能付きシャワーヘッドを提供することにある。
【０００５】
【課題を解決するための手段】
前記課題を効果的に解決できるように構成した手段としての、本発明に係る浄水機能付きシャワーヘッドは、シャワー吐出口を有する頭部と水質浄化用カートリッジを交換可能に収容する把持部とを一体に形成し、この把持部の水質浄化用カートリッジ収容箇所の上流側または下流側に浄水と原水とを切り換える流路切換弁を設け、この流路切換弁を前記把持部の中心軸に対して交差方向に移動する弁体を設けた平行移動式遮断弁として形成するとともに流路切換弁配置位置の外部に前記流路切換弁の押しボタン式操作部を配置して前記流路切換弁を外部より操作可能に形成し、さらに前記頭部の吐出口の上流側に前記流路切換弁とは独立に機能してシャワー吐出とストレート吐出とを切り換える吐出切換弁を設け、この吐出切換弁を弁座流路に対して交差方向に弁体が移動する遮断弁として形成するとともに吐出切換弁配置位置近傍の外部に前記吐出切換弁の操作部を配置して前記吐出切換弁を外部より操作可能に形成したことを特徴とするものである。
【０００６】
また、本発明に係る浄水機能付きシャワーヘッドは、前記流路切換弁が前記把持部に固定された筒状の弁座と、この弁座に内嵌されて前記筒状の弁座の軸方向に移動する弁体とを有し、原水と浄水のいずれか一方を弁座の内部を通過する流路として形成したことを特徴とする。
また、本発明に係る浄水機能付きシャワーヘッドは、前記水質浄化用カートリッジには外周面にフィルタを設け、外周面側から内面側へ抜ける浄化流路を形成したことを特徴とする。
また、本発明に係る浄水機能付きシャワーヘッドは、前記水質浄化用カートリッジには内面にフィルタを設け、内面側から外周面側へ抜ける浄化流路を形成したことを特徴とする。
また、本発明に係る浄水機能付きシャワーヘッドは、前記吐出切換弁を弁座流路に対して平行な軸の回りに弁体を回動する回動式遮断弁として形成したことを特徴とする。
また、本発明に係る浄水機能付きシャワーヘッドは、前記吐出切換弁を弁軸に対して前記弁体の板面を略垂直に向け、アーム部を介して前記弁軸から離間した位置に前記板面を配置して、前記弁体を弁軸回りに回動する回動式遮断弁として形成したことを特徴とする。
【０００７】
【発明の実施の形態】
本発明における以下の実施の形態では、把持部の外面から突出した押しボタンを有する流路切換弁を設けた場合について、具体的に説明する。
なお、この実施の形態は、発明の趣旨をより良く理解させるため具体的に説明するものであり、特に指定のない限り、発明内容を限定するものではない。
【０００８】
〔第１実施形態〕
〔構成〕
ここで用いられる浄水機能付きシャワーヘッドは、通常、台所の流しで混合水栓に直接またはホースを介して間接的に接続され、押しボタン式操作部を操作することにより混合水を浄化して使用することができる流路切換弁を把持部に設けたシャワーヘッドとして形成する。
このため、浄水機能付きシャワーヘッド１００は、図１，２の外観図に示すように、図示しない混合水栓または混合水栓に設けられたホースに取付けできる端部を有する把持部１１０と、この把持部１１０の混合水栓接続側とは反対側の端部でシャワー吐出できる頭部１２０とを備える。
【０００９】
把持部１１０は、頭部１２０に直結した筒部１１１と混合水栓接続側の筒部１１２とに中間部で分け、この中間部に両筒部１１１，１１２を着脱自在かつ一体的に組み合わせることができるようにするねじ結合部を形成した中継部１１３を形成し、この中継部１１３の螺合を解除して筒部１１１と筒部１１２を分離することにより、把持部１１０の内部に水質浄化用カートリッジ１３０（図３，４参照）を収容することができるようにし、そして、混合水栓接続側の端部には厚肉円筒状のホース接続部１１４を設け、その先端部にホース取付ねじ１１５を形成して、ホースとの着脱を容易にする。
また、把持部１１０の頭部直近の端部には、流路切換弁１４０（図４，５参照）の操作端である押しボタン１４１を把持部外周面より突き出して、把持部１１０の外部から流路切換弁１４０を操作できるように形成する。
【００１０】
頭部１２０は、図３〜５にも示すように、頂部が曲面に形成され主要部が略円筒状に形成されて内部に特別な突出部が設けられていない空洞となっており、把持部１１０から流入した混合水が滞留する空間（空洞）１２０ａを頭部外皮１２０ｂにより形成するとともに、混合水が一様に吐出する吐出面を有するシャワープレート１２１を着脱自在に形成し、そのシャワープレート１２１の中央部にストレート吐出口１２２を設け、その周囲を囲むようにシャワー吐出口１２３を設け、ストレート吐出とシャワー吐出とを切り換える吐出切換弁１５０を内設し、その吐出切換弁１５０の操作部となる切換レバー１５１をシャワープレート１２１の外部に突出配置する。
【００１１】
水質浄化用カートリッジを収容した浄水機能付きシャワーヘッド１００は、図３〜５に示すように、水質浄化用カートリッジ１３０の外周側流路１３１を原水流路の一部とし、水質浄化用カートリッジ１３０の中央空間部１３２を浄水流路の一部として利用する。
この場合の水質浄化用カートリッジ１３０は、中心軸と同心的に軸方向に長い貫通孔（中央空間部１３２）を設けて筒状に形成した活性炭を主成分とする水質浄化材１３３と、その外周面に不織布、スポンジまたは網等からなるフィルタ１３４を周設したものに、把持部内で同心的に嵌め合い位置固定するための端部用キャップ１３０ａ，１３０ｂを各端部に取り付けたものである。
【００１２】
把持部１１０の頭部側に位置する筒部１１１には、内部に水質浄化用カートリッジ１３０の下流側（頭部側）の端部用キャップ１３０ａを差し込み固定する筒部１１１と同軸な円筒形状のカートリッジ受け１１６を突設し、そのカートリッジ受け１１６の下流側に流路切換弁１４０を内蔵し、流路切換弁１４０の押しボタン１４１を筒部１１１の上部外周面から出入自在に突出させる。
また、把持部１１０のホース接続側に位置する筒部１１２には、内部に水質浄化用カートリッジ１３０の上流側（ホース接続側）の端部用キャップ１３０ｂを外周側から抑える複数のリブ１１２ａ，…，１１２ａを立設する。
【００１３】
これにより、筒部１１１の内部に設けられたカートリッジ受け１１６に水質浄化用カートリッジ１３０の下流側の端部用キャップ１３０ａの挿入端を差し込み、中継部１１３を螺合して、筒部１１１と筒部１１２とを一体に結合するときには、各リブ１１２ａ，…，１１２ａによって水質浄化用カートリッジ１３０の上流側の端部用キャップ１３０ｂの終端部が挟持され、水質浄化用カートリッジ１３０の芯出しおよび位置固定ができ、把持部１１０の中に水質浄化用カートリッジ１３０を略同軸的に収容できるようになる。
【００１４】
頭部１２０の内部に形成された空間１２０ａの下流側であって吐出切換弁収容空間の上流側には、空間１２０ａとシャワー吐出面上流側空間（吐出切換弁収容空間）１２０ｃとの間を仕切る仕切部材１２５を設け、その仕切部材１２５の中央部に集合通過部材１２６を設ける。
仕切部材１２５の下流側に設けられる吐出切換弁１５０は、その弁体１５０ａの先端部が集合通過部材１２６の直下に位置できるように配置する。
集合通過部材１２６および吐出切換弁１５０の弁体１５０ａが上下に配置された位置の、さらに下流側には、シャワープレート１２１に形成されたストレート吐出口１２２に連通するストレート吐出用流路形成部材１２７を立設する。
【００１５】
吐出切換弁１５０は、弁体１５０ａを集合通過部材１２６から僅かに隙間をあけた直近の下流に配置し、弁体１５０ａの下面をストレート吐出用流路形成部材１２７の上端に形成された開口１２７ａに接触できる直近の位置に配置して、ストレート吐出用流路形成部材１２７の蓋として上部から覆い被さることができるようにし、また、切換レバー１５１の操作によって、弁体１５０ａが開口１２７ａの真上の位置から弁体１５０ａの全体が開口１２７ａの位置から外れるまでの範囲で、弁体１５０ａがストレート吐出用流路形成部材１２７の上端に出入り自在に回動できるように、切換レバー１５１の回動角度を設定して、弁体１５０ａの全体が開口１２７ａの位置から外れると、集合通過部材１２６から流出する混合水がすべて開口１２７ａからストレート吐出流路１２７ｂに流入するように形成する。
【００１６】
筒部１１１が一体に形成された頭部１２０には、図６に示すように、筒部１１１の上周面に開口された流路切換弁組込部１１１ａを設け、内部に形成された筒状の弁座１４２に略円柱状の弁体１４３を内嵌し、弁体１４３と筒部１１１の下側の内面との間には弁体１４３を軸方向に付勢するコイルスプリング１４４を介装し、弁体１４３と操作部材としての押しボタン１４１との間には、第１切換こま１４５ａ、第２切換こま１４５ｂ、切換リング１４５ｃおよび切換リング支持部材１４５ｄの４つの部品からなる弁体位置切換機構１４５を介装する。そして弁体１４３には軸方向の先端部にＯリング１４６を嵌着し、軸方向の基部にはＹリング（あるいはＵリング）１４７を嵌着して、軸方向に移動する弁体１４３における弁座１４２と弁体１４３との間の漏止め対策を講じる。
【００１７】
頭部１２０は、図７〜１２に示すように、把持部側に筒部１１１を一体的に突出し、その筒部１１１の先端部には筒部１１２との嵌合用の円筒部外面１１３ａと雄ねじ１１３ｂとを外面側に形成し、さらに円筒部外面１１３ａの軸方向の基部には螺合時の漏れ止めに必要なＯリング（図３参照）を嵌め込むＯリング溝１１３ｆを刻設して、中継部１１３の雄側として筒部１１２とのねじ結合ができるようにする。
そして、中継部形成箇所の内面側には、水質浄化用カートリッジ１３０の下流側の端部用キャップ１３０ａを内嵌できる円筒形状のカートリッジ受け１１６を、筒部１１１の上流側と下流側とを仕切る隔壁１１１ｃにより、隔壁１１１ｃの上流側の面で筒部１１１に対して同軸的に支持して配置する。
さらに、この隔壁１１１ｃの下流側には流路切換弁１４０を組み込む流路切換弁組込部１１１ａと弁体嵌合用に形成された筒状の弁座１４２を形成し、カートリッジ受け外周側の流路１１６ａの下部と弁座１４２との間を連通する流路１１７を、カートリッジ受け１１６と弁座１４２との各下端部を結合する角筒状の流路形成部材１１８を立設することにより形成する。
【００１８】
弁座１４２は、円筒状に形成し、上端から弁体１４３を内嵌できるように弁体の外径よりも大きく内径を形成するとともに下端部には弁体が通り抜けないように縮径した縮径部を形成した内面を有し、上端の外周縁には周上等間隔２か所に切換リング支持部材１４５ｄの係止部と逆向きの形状を有して切換リング支持部材１４５ｄを係止する係止部１４２ｂ，１４２ｂを形成し、周面の下端部には流路形成部材１１８の流路１１７に連通する開口１４２ａを穿設する。
流路形成部材１１８には、上端部に弁座１４２の側面を貫通する開口１４２ａが穿設され、下端部に隔壁１１１ｃを貫通してカートリッジ受け１１６の外周側の流路１１６ａに通じる開口１１１ｄが穿設されて、カートリッジ受け１１６の外周側の流路１１６ａから弁座１４２の内部に至る流路を形成する。
【００１９】
隔壁１１１ｃには、流路形成部材１１８の両側面の外方に、カートリッジ受け１１６の内側の流路１１６ｂに通じる開口１１１ｅ，１１１ｅを穿設して、弁座１４２に内嵌された弁体１４３が弁内流路を閉じて流路切換弁１４０を閉状態にした場合に、流路１１７が閉鎖され、開口１１１ｅ，１１１ｅを通過して浄水が頭部１２０の空間１２０ａに流出できるようにする。これに対して、弁体１４３が弁内流路を開放して流路切換弁１４０を開状態にした場合には、水質浄化用カートリッジ１３０の外周側流路から開口１１１ｄ、流路１１７および開口１４２ａが開放され、原水がこれらを経て弁座１４２の内部を通り、頭部１２０の空間１２０ａに流出できるようになる。
流路切換弁１４０が組み込まれる流路切換弁組込部１１１ａと弁座１４２は、中心軸を同一中心軸とし、この同一の中心軸を把持部１１０の中心軸に対して交差方向に向け、弁座内で移動する弁体１４３の移動方向を把持部１１０の中心軸に対して交差方向に移動できるようにする。
【００２０】
流路切換弁組込部１１１ａは筒部１１１の上部外面側に開口し、コイルスプリング１４４を付勢部材として下端に取り付けるとともにＯリング１４６およびＹリング１４７を嵌着した弁体１４３を弁座１４２に内嵌し、その弁体１４３の上端に弁体位置切換機構１４５を取り付け、その弁体位置切換機構１４５の上部に押しボタン１４１を押圧面側を上方に向けて取り付けることにより、流路切換弁１４０の押しボタン１４１を把持部１１０の外方より押圧操作可能にする。
【００２１】
押しボタン１４１は、図１３〜１５に示すように、角部を丸め、上部に截頭角錐を形成した浅い角柱となる外形を有する薄い肉厚の部材を形成し、その内面側には、頂部の中央部に第２切換こま１４５ｂの円筒部の端面が当接する座となる凹部１４１ｃを刻設し、そして、周辺部内面の相対する辺の各中央部に切換リング支持部材１４５ｄを案内する案内溝１４１ａ，１４１ａを刻設し、他の相対する辺の内面には弁体１４３の上部に形成された係止部１４３ｉ（図１６〜２０参照）と逆向きに形成して弁体１４３の係止部１４３ｉが係合する係合部１４１ｂ，１４１ｂを形成する。
案内溝１４１ａ，１４１ａおよび係合部１４１ｂ，１４１ｂは、それぞれ相手部品の係合端が側方にずれないように必要最小限の幅で形成するとともに係合位置を凹部に形成する。
【００２２】
弁体１４３は、図１６〜２０に示すように、略円柱形状に形成された本体１４３ａの外周部には先端側にＯリング溝１４３ｂを基部（上端）側にＹリング溝１４３ｃを刻設し、本体１４３ａの下端側の端面にコイルスプリング１４４の一端側を挿入する凹部１４３ｄを中心部に細い円柱状突出部１４３ｅを設けて深く形成し、本体１４３ａの上端側の端面に中心部に細い円柱状突出部１４３ｆを設けて浅い凹部１４３ｇを形成する。
本体１４３ａの上端面から軸方向に突出して直角に折れ曲がった係止アーム１４３ｈを周上等間隔４ケ所に突設し、係止アーム１４３ｈの２つずつをペアにして先端に同一の向きに向け、互いに反対向きに向いた他のペアのフックが近接離間自在に弾力性を持つように長めに形成した係止アーム１４３ｈの先端部に係止部１４３ｉ，…，１４３ｉを形成する。
【００２３】
本体１４３ａの下端側の端面に設けた深い凹部１４３ｄには、最奥部にコイルスプリング１４４の端部を当接する座１４３ｊ，…，１４３ｊを内周面から周上等間隔に４つ突設し、各座１４３ｊ，…，１４３ｊの端面が同一面になるように形成する。また、本体１４３ａの上端側の端面に設けた浅い凹部１４３ｇには、底面から円板形に突出して第１切換こま１４５ａの端面を当接する座１４３ｋを設け、その座１４３ｋの中心部から細い円柱状突出部１４３ｆを突出する。
各係止アーム１４３ｈには、本体１４３ａの上端側の端面から軸方向に突出して直角に折れ曲がった形状に形成され、端面から軸方向に突出した支柱部分から直角に折れ曲がって側方に突出したブラケット部分に、補強用のリブ１４３ｍ，１４３ｎを設けて曲げ強度を強化する。
【００２４】
押しボタン１４１と弁体１４３との間に設けられる弁体位置切換機構１４５は、図６に示すように、第１切換こま１４５ａ、第２切換こま１４５ｂ、切換リング１４５ｃおよび切換リング支持部材１４５ｄの４つの部品からなり、このうち、第１切換こま１４５ａ、第２切換こま１４５ｂ、切換リング１４５ｃは弁体１４３の移動距離を変えるためのカム機構を構成し、これらの３つの部品を所定位置に嵌め合わせて組み合わせることにより所定の機能を発揮することができるようになり、また、切換リング支持部材１４５ｄは弁座１４２の上端部に係合して位置固定し、カム機構を構成する第１切換こま１４５ａ、第２切換こま１４５ｂ、切換リング１４５ｃの各部品を位置規定し、所定の動きができるようにして、目的とする機能を発揮できるようにする。
【００２５】
第１切換こま１４５ａは、図２１（Ａ），…，（Ｅ）に示すように、こま本体１６１の一端側の端面から第２切換こま１４５ｂの嵌合孔に挿入する細い棒状の嵌合軸１６２を同軸的に突出し、嵌合軸１６２が突出する基部にはこま本体１６１の端部外周側にまで突出する平板状のリブ１６３，１６３，１６３を周上等間隔に３つ立設する。各リブ１６３の切換リング１４５ｃ側に位置する端部には、切換リング１４５ｃの切換軸側の端面に設けられた傾斜面と同じ方向に向いて傾斜する傾斜面を形成する。また、こま本体１６１の嵌合軸突出側と反対側の端部には、弁体１４３に設けられた円柱状突出部１４３ｆを嵌合する嵌合孔１６４を穿設する。
【００２６】
第２切換こま１４５ｂは、図２２（Ａ），…，（Ｄ）に示すように、本体１６６を筒状の部材に形成して中心部に第１切換こま１４５ａの嵌合軸１６２が挿入できるようにし、一端には押しボタン１４１の凹部１４１ｃ（図１３参照）に当接する端面が形成され、他端（第１切換こま側に位置する端部）には周上等間隔に６個のリブ１６７を立設し、リブ立設側の端部には第１切換こま１４５ａに設けたリブ１６３の傾斜面に当接する各リブ１６７の先端が山形に成形されるとともに各リブ１６７の中間が谷形に成形された端面を形成し、この凹凸が形成された端面に当接した第１切換こま１４５ａのリブ１６３，１６３，１６３がその傾斜面に沿って谷側に移動することにより第１切換こま１４５ａが一定方向へ回転する。
【００２７】
切換リング１４５ｃは、図２３（Ａ），…，（Ｅ）に示すように、円筒部１７１の内径側にスプライン溝のような断面形状の溝１７２を刻設し、円筒部１７１の外周側に鍔部１７３を設け、弁体１４３に設けられて相反する向きの係止端１４３ｉ，１４３ｉを突設した２つの係止アーム１４３ｈの間に入るガイドプレート１７４，１７４を鍔部１７３の周上等間隔２ケ所に突設し、このガイドプレート１７４，１７４に対して９０度変位した位置に切換リング支持部材１４５ｄの開口１７９ａ（図２７参照）に係合する爪部１７５，１７５を突設する。
内径側に溝１７２を刻設した円筒部１７１は、鍔部１７３に対して一方の側には円筒状に突出し、他方の側には端面に同一方向へ傾いた傾斜面を形成した軸方向に浅い溝１７２ａと、鍔部１７３に達する軸方向に深い溝１７２ｂとを交互に設けた３分割された切欠円筒形状にして突出し、その軸方向に浅い溝１７２ａの傾斜面に当接する第１切換こま１４５ａのリブ１６３，１６３，１６３に形成された傾斜面に従って軸方向へ移動し、当接位置の傾斜面により軸方向に浅い溝１７２ａと軸方向に深い溝１７２ｂとのいずれかに入るようになる。
軸方向に深い溝１７２ｂの形成側では、円筒部１７１の内側に、係合される第１切換こま１４５ａの先端部に設けられたリブ１６３が当接する位置規制用の段差部１７２ｃを設け、第１切換こま１４５ａのストロークを規定するとともに第１切換こま１４５ａの通り抜けを防止する。
【００２８】
切換リング支持部材１４５ｄは、図２４〜２７に示すように、本体１７６に切換リング１４５ｃの３分割されて切欠円筒形状に形成された部分を挿入できる大きさの孔を設けたリング状に形成し、このリング状の本体１７６から互いに対向する位置の外方に、弁座１４２の上端部外周に形成された係止部１４２ｂ，１４２ｂに係止するフック状に形成した係止部１７７，１７７を先端に設けた係止アーム１７８，１７８を延設し、係止アーム１７８，１７８の延設位置から９０度変位した位置には、係止部１７７，１７７の形成側と反対側に切換リング１４５ｃの支持部材１７９，１７９を突出する。
各支持部材１７９は本体１７６の外周に沿って湾曲した面を形成し、支持部材１７９の本体１７６との結合位置の中央部に切換リング１４５ｃの爪部１７５が係止する開口１７９ａを設け、開口１７９ａから先端側には尖端側に向けて肉厚が薄くなる傾斜面１７９ｂを形成する。
また、各係止アーム１７８の係止部形成側への曲がり部には補強用のリブ１７８ａを設けて撓みを規制し、係合時の角部内面側に対する応力集中による亀裂発生を防止する。
【００２９】
中継部１１３を介して頭部１２０に一体化された筒部１１１と分離結合可能に形成されるホース接続側の筒部１１２は、図２８〜３１に示すように、略円筒形状で、ホース接続側の端部に円形の孔を設けた端面１１２ｂを有し、その端面から外側に厚肉円筒状のホース接続部１１４を突出し、その先端部にホース取付ねじ１１５を形成し、ホース接続部１１４を設けた端部の反対側に位置する端部には、内面側に雌ねじ１１３ｃと筒部１１１の円筒部外面１１３ａに嵌合するための円筒部内面１１３ｄとを形成して中継部１１３の雌側を形成する。
【００３０】
筒部１１２の内面側には、上流側の端部および端面１１２ｂに水質浄化用カートリッジ１３０のホース接続側の端部用キャップ１３０ｂの端縁部の寸法に合わせて内側の寸法を形成した複数のリブ１１２ａ，…，１１２ａを突出し、水質浄化用カートリッジ１３０の収容時に端部用キャップ１３０ｂの端縁部を挟持して、水質浄化用カートリッジ１３０を同心的に位置固定することができるようにするとともに、混合水がホース接続側より流入する場合のガイドおよび渦消し部材とする。
また、ホース接続部１１４の外周側には、水栓本体のホルダ部に嵌め込み支持する際の位置決めリブとなる突起部１１４ａを突出する。
【００３１】
頭部１２０の内部に組み込まれる仕切部材１２５は、図３２〜３４に示すように、円盤状仕切板１２５ａの各面側の外周縁に短い円筒状の環状部材１２５ｂ，１２５ｃを突設し、円盤状仕切板１２５ａの中央部にシャワー吐出側またはストレート吐出側への入口部へ移行するための集合通過部材１２６（図３６参照）を嵌合する嵌合孔１２５ｄを穿設する。そして、外周縁の下側の環状部材１２５ｃには外周面に条数２の多条雄ねじ１２５ｅを形成してシャワープレート１２１を螺合できるようにし、ねじ形成箇所の上側にはＯリング溝１２５ｆを形成して漏れ止めできるようにする。
嵌合孔１２５ｄは、径が２段に分けられて、上部には円形の軸方向に対して同一径の孔が形成され、下部には軸方向下方に向けて縮径される孔に形成され、それらの中間には段差を設けて上方から集合通過部材１２６を嵌め込めるように形成する。
【００３２】
集合通過部材１２６は、図３５〜３７に示すように、鍔側の端面を浅く削り込んで外縁付き平面形にした有鍔円柱の円柱部１２６ａに、環状の溝１２６ｂを鍔側の浅く削り込んだ端面から軸方向に深くかつ貫通しない程度に刻設し、環状の溝１２６ｂの外周に外側の先端部が鍔部１２６ｄにまで達する多数の光芒１２６ｃを刻設し、この光芒１２６ｃを有する環状の溝１２６ｂを設けた円柱部１２６ａの外径を鍔部１２６ｄの外径よりも小さくして、光芒１２６ｃの外側の下端部が側方に開口した形状に形成する。
この集合通過部材１２６は円柱部１２６ａと鍔部１２６ｄの外形寸法を仕切部材１２５（図３３参照）の嵌合孔１２５ｄに嵌め込むことができる外径にし、円柱部１２６ａの側面に形成された開口が仕切部材１２５の嵌合孔１２５ｄに形成された下方に縮径される孔の位置に達するように軸方向の寸法を調節して、開口から径方向外下方へ流出する原水または浄水を縮径される孔により中心部下方に集中するように流出させる。
【００３３】
仕切部材１２５の下流側に位置する吐出面形成部材としてのシャワープレート１２１は、図３８〜４１に示すように、平板状の円板部１２１ａとその外周縁を立ち上げて形成した張出部１２１ｂとを形成し、円板部１２１ａの中央部にストレート吐出口１２２を穿設し、このストレート吐出口１２２に隣接して吐出切換弁１５０の弁軸１５１ａ（図４５参照）を貫通させて軸支する軸孔１２４を穿設し、ストレート吐出口１２２と軸孔１２４とを除いた面のストレート吐出口１２２の周囲にシャワー吐出口１２３となる小孔を多数個略均等な間隔で穿設する。
このシャワープレート１２１は、各孔を穿設した円板部１２１ａの張出部形成側を混合水の流入側（上流側）とし、張出部１２１ｂの内周面側には条数が２の多条雌ねじ１２１ｃを形成して、仕切部材１２５に設けた多条雄ねじ１２５ｅに螺合できるようにする。
また、張出部１２１ｂの上端部の内側には拡径した段差部１２１ｄを設けてＯリング溝を被う押圧面を形成し、仕切部材１２５のＯリング溝１２５ｆに取り付けたＯリング（図３参照）を外側から押圧して仕切部材１２５との螺合時に漏止めができるようにする。
【００３４】
さらに、ストレート吐出口１２２の上部には、ストレート吐出用流路形成部材１２７（図４４参照）を嵌合させる凹部１２１ｅを設け、シャワープレート中央部にストレート吐出用流路形成部材１２７を立設して、ストレート吐出側の流路（ストレート吐出流路１２７ｂ）とシャワー吐出側の流路（シャワー吐出面上流側空間１２０ｃ）とを仕切ることができるようにする。
さらにまた、張出部１２１ｂの外周面には、軸孔１２４を設けた位置の外周側に、軸孔穿設位置の外周面を挟むように２つの突出部１２１ｆ，１２１ｆを突設し、吐出切換弁１５０の弁軸１５１ａが軸孔１２４を貫通して軸支されて切換レバー１５１が２つの突出部１２１ｆ，１２１ｆの間に設けられたとき、切換レバー１５１の操作範囲を２つの突出部１２１ｆ，１２１ｆの間隔によって与えられた回動角に規制できるようにする。
【００３５】
シャワープレート中央部に立設するストレート吐出用流路形成部材１２７は、図４２〜４４に示すように、上端縁が内面側に縮径された端部を有する円筒形状に形成され、円筒部の内部がストレート吐出流路１２７ｂとして利用される。
上端に形成された開口１２７ａの開口径が円筒部分の内径よりも小さくなるように形成して、吐出切換弁１５０の弁体１５０ａに形成された皿部１５０ｂ（図４６参照）を載置し易くする。また、下端部の外径はシャワープレート１２１の中央部に形成された凹部１２１ｅの内径側に嵌合できる大きさを有し、嵌合後にシャワープレート１２１の中央部に立設できるように嵌合状態が緊密になるように形成する。
【００３６】
吐出切換弁１５０は、図３に示すように、シャワープレート１２１の円板部１２１ａを貫通した軸回りに回動自在に支持される弁軸１５１ａを一体に設けた切換レバー１５１と、集合通過部材１２６とストレート吐出用流路形成部材１２７との間に設けられた隙間に配置できるように上面を浅い凹面に形成した薄い皿状に形成した弁体１５０ａとに分割される。
【００３７】
切換レバー１５１は、図４５に示すように、弁軸１５１ａに対して垂直な方向にレバー部１５１ｂを延設し、その操作片であるレバー部１５１ｂの先端にレバー回動方向に対して略垂直な面を形成する指掛け部１５１ｃには両面側にそれぞれ凹部１５１ｄを形成して指の係止を容易にする。弁軸１５１ａの先端には、弁体側に形成された嵌合孔１５０ｄ（図４６参照）に挿入して弁体１５０ａと結合し、結合後の抜けを防止するための拡張側に付勢されている断面が矩形に形成された弾性係止部１５１ｅ，１５１ｅを突出させる。
【００３８】
弁体１５０ａは、図４６，４７に示すように、上面を浅い凹面に形成した薄い皿状に形成し、下面を板厚分長くした曲率半径で湾曲した凸面に形成した皿部１５０ｂと、この皿部１５０ｂから一方向へ延設したアーム部１５０ｃと、このアーム部１５０ｃの先端部に弁軸側の弾性係止部１５１ｅ，１５１ｅを挿入して内嵌する矩形断面の嵌合孔１５０ｄを穿設した軸結合部１５０ｅとからなる。
弁軸１５１ａ側の弾性係止部１５１ｅ，１５１ｅを軸結合部１５０ｅの嵌合孔１５０ｄに挿入する際、シャワープレート１２１に形成された軸孔１２４に外方（下流側）から弾性係止部１５１ｅ，１５１ｅを挿入して、軸孔１２４に弁軸１５１ａを嵌合し、その後、弁体１５０ａ側の嵌合孔１５０ｄに弾性係止部１５１ｅ，１５１ｅを抜け防止可能になるまで挿入して、弁体１５０ａと切換レバー１５１とをシャワープレート１２１に組み付けるとともに吐出切換弁１５０を一体に結合する。
【００３９】
〔作用効果〕
このように構成した第１実施形態では、流路切換弁１４０の押しボタン１４１を指で押圧することによって浄水と原水とを容易に切り換えることができ、また、浄水と原水との切換えとは独立に、吐出切換弁１５０の切換レバー１５１を回動操作することによってストレート吐出とシャワー吐出とを切り換えることができるようになる。
【００４０】
流路切換弁１４０の押しボタン１４１を押圧して浄水吐出位置に押し下げた場合（図３〜５）には、流路切換弁１４０が弁閉状態となり、流路切換弁１４０のカートリッジ受け外面側に形成された流路１１６ａに連通する流路が閉鎖状態となって、把持部１１０内に流入した混合水が、水質浄化用カートリッジ１３０の外周側流路１３１からフィルタ１３４および水質浄化材１３３を通過して水質を浄化しつつ水質浄化材１３３の中央空間部１３２に流出して、カートリッジ受け１１６の内面側の流路１１６ｂを介して頭部１２０に形成された空間１２０ａに流出し、吐出切換弁１５０の選択に従って、空間１２０ａから集合通過部材１２６を通過してストレート吐出口１２２またはシャワー吐出口１２３よりシャワープレート１２１の外部に吐出する。
【００４１】
また、流路切換弁１４０の押しボタン１４１を押圧解除して原水吐出位置に押し戻した場合（図４８〜５１）には、流路切換弁１４０が弁開状態となり、流路切換弁１４０のカートリッジ受け外面側に形成された流路１１６ａに連通する流路が開放状態となって、把持部１１０内に流入した混合水が、水質浄化用カートリッジ１３０の外周側流路１３１を通過し、カートリッジ受け１１６の外面側の流路１１６ａから開口１１１ｄ、流路形成部材１１８内の流路１１７、開口１４２ａを経由して弁座１４２の内部に至る流路を通過することにより、頭部１２０に形成された空間１２０ａに流出し、吐出切換弁１５０の選択に従って、ストレート吐出口１２２またはシャワー吐出口１２３を介してシャワープレート１２１の外部に吐出する。
その後、流路切換弁１４０の押しボタン１４１を把持部１１０の外方から押圧して、再度、浄水吐出位置に押し下げると、前述のような浄水吐出の場合に戻り、浄水を吐出するようになる。
【００４２】
また、吐出切換弁１５０の操作は、流路切換弁１４０の操作とは独立に操作でき、ストレート吐出とシャワー吐出とを任意に設定することができる。
まず、切換レバー１５１を操作して弁軸１５１ａの軸心を中心にしてストレート吐出側に回動すると、弁体１５０ａがストレート吐出用流路形成部材１２７の開口１２７ａの位置から外れ、集合通過部材１２６から流出する混合水がストレート吐出用流路形成部材１２７の開口１２７ａへ流入し、ストレート吐出流路１２７ｂの内部を通過してストレート吐出口１２２から吐出する。
【００４３】
そして、切換レバー１５１がストレート吐出側に設定されている場合に、切換レバー１５１を反対方向へ操作して、弁軸１５１ａの軸心を中心にしてシャワー吐出側に回動すると、図３または４９に示すように、弁体１５０ａがストレート吐出用流路形成部材１２７の開口１２７ａの上部に位置して開口１２７ａを塞ぎ、集合通過部材１２６から流出する混合水が弁体１５０ａの皿部１５０ｂに阻まれてストレート吐出用流路形成部材１２７の周囲に流出し、仕切部材１２５とシャワープレート１２１によって形成されたシャワー吐出面上流側空間１２０ｃを介してシャワー吐出口１２３から吐出するようになる。
その後、切換レバー１５１を操作して弁軸１５１ａの軸心を中心にしてストレート吐出側に回動すると、前述のように、ストレート吐出口１２２から吐出するようになる。
【００４４】
これにより、流路切換弁１４０の押しボタン１４１を把持部１１０の外方より押圧することにより、浄水吐出と原水吐出とを容易に切り換えることができ、浄水吐出時には、混合水が水質浄化用カートリッジ１３０の外周側流路１３１から中央空間部１３２へ水質浄化材１３３を通過する際に浄化されるようになり、また、原水吐出時には、フィルタ１３４の表面側を通過する混合水によって、浄水吐出時に溜まったフィルタ表面の蓄積物が洗い流され、目詰りを起こりにくくするとともに水質浄化材１３３の劣化を防止するようになり、長期間、水質浄化性能を高レベルに維持できるようになる。
これに加えて、吐出切換弁１５０が流路切換弁１４０と完全に独立しているため、原水と浄水のどちらが吐出される場合であっても、ストレート吐出またはシャワー吐出のいずれかを選択して吐出させることができ、４種類の利用可能な形態が選択できるようになる。
【００４５】
〔第２実施形態〕
前記第１実施形態では水質浄化用カートリッジの外周側を原水流路（浄化直前流路）として形成されているが、この第２実施形態では、水質浄化用カートリッジの中央空間部を原水流路（浄化直前流路）として形成した場合について具体的に説明する。
以下の説明では、各部材の符号は２００番台の番号にして第１実施形態と識別することにし、また、流路切換弁の構成に係る部材以外の部材については、第１実施形態と同じ構成にするとともに２００番台の番号のうち２桁以下の番号を同じにして説明を省略する。
【００４６】
〔構成〕
浄水機能付きシャワーヘッド２００は、図５２〜５４の矢視断面図に示すように、図示しない混合水栓または混合水栓に設けられたホースに取付けできる端部を有する把持部２１０と、この把持部２１０の混合水栓接続側とは反対側の端部でシャワー吐出できる頭部２２０とを備える。
【００４７】
把持部２１０は、頭部２２０に直結された筒部２１１と混合水栓接続側の筒部２１２とに分け、これらを着脱自在かつ一体的に組み合わせることができるようにするねじ結合部を形成した中継部２１３により分離結合自在に形成する。
この中継部２１３の螺合を解除して筒部２１１と筒部２１２とを分離することにより、把持部２１０の内部に水質浄化用カートリッジ２３０を交換可能に収容できるようにする。
さらに、筒部２１１の頭部直近の端部には、流路切換弁２４０を内蔵し、筒部外面から外方に流路切換弁２４０の操作端である押しボタンを突設させて、把持部２１０の外部から流路切換弁２４０を操作できるように形成する。
また、筒部２１２の混合水栓接続側の端部には厚肉円筒状のホース接続部２１４を設け、その先端部にホース取付ねじ２１５を形成して、ホースとの着脱を容易にする。
【００４８】
頭部２２０は、把持部２１０から流入した混合水が滞留する空間（空洞）２２０ａを頭部外皮２２０ｂにより形成するとともに、混合水が一様に吐出する吐出面を有するシャワープレート２２１を着脱自在に取り付け、そのシャワープレート２２１の中央部にストレート吐出口２２２を設け、その周囲を囲むようにシャワー吐出口２２３を設け、ストレート吐出とシャワー吐出とを切り換える吐出切換弁２５０を内設し、その吐出切換弁２５０の操作端となる切換レバー２５１をシャワープレート２２１の外部に突設する。
【００４９】
水質浄化用カートリッジ２３０は、活性炭を主成分とする水質浄化材２３３を中心軸と同心的に軸方向に長い貫通孔（中央空間部２３２）を設けた筒状に成形し、その内周面に不織布、スポンジまたは網等からなるフィルタ２３５を周設し、水質浄化材２３３の混合水の流れから見て下流側に位置する端部に中央空間部内嵌用の筒部と外周面外嵌用の筒部とを有する端部用キャップ２３０ａを嵌合し、また、上流側に位置する端部に中央空間部内嵌用の筒部と外周面外嵌用の筒部とを有する端部用キャップ２３０ｂを嵌合する。
【００５０】
把持部２１０の頭部側に位置する筒部２１１には、内部に水質浄化用カートリッジ２３０の下流側（頭部側）の端部を差し込み固定する円筒状のカートリッジ受け２１６を突設し、また、ホース接続側に位置する筒部２１２には、内面の上流側に位置する端部に円筒状のカートリッジ受け２１７を突設する。
筒部２１１のカートリッジ受け２１６に水質浄化用カートリッジ２３０の下流側に設けられた端部用キャップ２３０ａの挿入端を差し込み、そして、水質浄化用カートリッジ２３０の上流側に位置する端部に設けられた端部用キャップ２３０ｂが筒部２１２に設けられたカートリッジ受け２１７に嵌合するように、中継部２１３を螺合して筒部２１１に筒部２１２を組み付けることにより、水質浄化用カートリッジ２３０の両端部を芯出しおよび位置固定して、把持部２１０の中に水質浄化用カートリッジ２３０を略同軸的に収容する。
【００５１】
水質浄化用カートリッジ２３０を把持部２１０に収容して形成される流路のうち、水質浄化用カートリッジ２３０の外周側流路２３１は浄水流路の一部となり、また、水質浄化用カートリッジ２３０の中央空間部２３２を原水流路の一部となる。そして、カートリッジ受け２１６の外周側の流路２１６ａは水質浄化用カートリッジ２３０の外周側流路２３１と連通して浄水流路の一部となり、また、カートリッジ受け２１６の内面側の流路（空間）２１６ｂは水質浄化用カートリッジ２３０の中央空間部２３２と連通して原水流路の一部となる。
【００５２】
カートリッジ受け２１６の下流側に流路切換弁２４０を内蔵し、流路切換弁２４０の弁座２４２の側面にはカートリッジ受け２１６の内面側の流路２１６ｂに連通する開口（流路）を穿設する。
そして、流路切換弁２４０の操作部材である押しボタン２４１を、流路切換弁２４０の内蔵位置における切換弁中心軸の軸心線上に押しボタン２４１の中心位置を合わせるとともに、筒部２１１の外周面から外方に突設する。
【００５３】
これにより、流路切換弁２４０の押しボタン２４１を押圧して浄水吐出にした場合には、流路切換弁２４０が弁閉状態となり、カートリッジ受け２１６の内面側に形成された流路２１６ｂに連通する流路が閉鎖状態となり、把持部２１０内に流入した混合水が、水質浄化用カートリッジ２３０の中央空間部２３２から水質浄化用カートリッジ２３０のフィルタ２３５および水質浄化材２３３を通過して水質を浄化しつつ外周側流路２３１に流出して、カートリッジ受け２１６の外周側の流路２１６ａを介して頭部２２０に形成された空間２２０ａに流出し、その後は、吐出切換弁２５０の選択に従って、空間２２０ａからストレート吐出口２２２またはシャワー吐出口２２３を介してシャワープレート２２１の外部に吐出する。
【００５４】
また、流路切換弁２４０の押しボタン２４１を押し戻して原水吐出にした場合には、流路切換弁２４０が弁開状態となり、カートリッジ受け２１６の内面側に形成された流路２１６ｂに連通する流路が開放状態となり、把持部２１０内に流入した混合水が、水質浄化用カートリッジ２３０の中央空間部２３２を通過し、カートリッジ受け２１６の内面側の流路２１６ｂを介して流路切換弁２４０の弁座内に流入し、弁座内を通過して空間２２０ａに流出し、その後は、吐出切換弁２５０の選択に従って、ストレート吐出口２２２またはシャワー吐出口２２３を介してシャワープレート２２１の外部に吐出する。
【００５５】
頭部２２０の内部に形成された空間２２０ａの下流側であって吐出切換弁２５０を収容する部分の上流側には、空間２２０ａとシャワー吐出面上流側空間２２０ｃとの間を仕切る仕切部材２２５を設け、その仕切部材２２５の円盤状仕切板２２５ａの中央部に集合通過部材２２６を設ける。
仕切部材２２５の下流側に設けられる吐出切換弁２５０の弁体２５０ａは、その弁体２５０ａが集合通過部材２２６の直下に位置できるように配置する。
集合通過部材２２６および吐出切換弁２５０の弁体２５０ａが上下に配置された位置の、さらに下流側には、シャワープレート２２１に形成されたストレート吐出口２２２に連通するストレート吐出用流路形成部材２２７を立設してストレート吐出流路２２７ｂを形成する。
【００５６】
吐出切換弁２５０は、弁体２５０ａが仕切部材２２５の下流側で集合通過部材２２６から僅かに隙間をあけた直近の下流に配置され、弁体２５０ａの下面をストレート吐出用流路形成部材２２７の上端に形成された開口２２７ａに接触できる直近の位置に配置して、ストレート吐出用流路形成部材２２７の蓋として上部から覆いかぶさることができるようにし、また、切換レバー２５１の操作によって、弁体２５０ａが開口２２７ａの真上の位置から弁体２５０ａの全体が開口２２７ａの位置から外れるまでの範囲で、弁体２５０ａがストレート吐出用流路形成部材２２７の上端に出入り自在に回動できるように、切換レバー２５１の回動角度を設定する。
【００５７】
頭部２２０は、図５５〜５８に示すように、把持部側に筒部２１１を一体的に突出し、その筒部２１１の先端部には筒部２１２との嵌合用の円筒部外面２１３ａと雄ねじ２１３ｂとを外面側に形成して中継部２１３の雄側を形成し、筒部２１１の中継部２１３と空間２２０ａとの中間位置に流路切換弁組込部２１１ａと弁座２４２とを形成し、頭部２２０の吐出側には頂部が曲面に形成され主要部が略円筒状に形成されて内部に特別な突出部が設けられていない空洞となっている頭部外皮２２０ｂにより略円筒状に形成し、仕切板や吐出切換弁等を収容することができるようにする。
【００５８】
そして、中継部形成箇所の内面側には、水質浄化用カートリッジ２３０の下流側の端部用キャップ２３０ａを内嵌できる円筒形状のカートリッジ受け２１６を、筒部２１１の上流側と下流側とを仕切る隔壁２１１ｃにより、隔壁２１１ｃの上流側の面で筒部２１１に対して同軸的に支持して配置する。
さらに、隔壁２１１ｃの下流側には流路切換弁２４０を組み込む流路切換弁組込部２１１ａと弁体嵌合用に形成された筒状の弁座２４２とを同軸的に形成し、流路切換弁組込部２１１ａの側面の一部を隔壁２１１ｃと一体に形成し、さらに、隔壁２１１ｃの側部および下部であって弁座２４２の側面外方および下側になる位置を開口して、カートリッジ受け外周側の流路２１６ａの側部および下部と弁座２４２の側面外方および下側との間を連通する流路２１８を形成する。
【００５９】
原水と浄水とを切り換える流路切換弁２４０は、弁座２４２の内外に取り付ける各部材が第１，２実施形態で使用されたものと同一の部材を利用する。
すなわち、流路切換弁組込部２１２ａに固定される弁座２４２と、弁座２４２に組み込まれて押しボタン２４１により動かされる弁体２４３と、弁座２４２の底面と弁体２４３の下端との間に介装されて押しボタン２４１の押圧力が解除されたときに弁体２４３を押し戻すコイルスプリング２４４と、押しボタン２４１と弁体２４３との間に介装されて弁体２４３の軸方向の位置を変更する弁体位置切換機構２４５とからなる。
【００６０】
弁座２４２は、円筒状に形成し、上端から弁体２４３を内嵌できるように弁体の外径よりも大きく内径を形成するとともに下端部には弁体が通り抜けないように縮径した縮径部を形成した内面を有し、上端の外周縁には周上等間隔２か所に切換リング支持部材２４５ｄの係止部と逆向きの形状を有して切換リング支持部材２４５ｄを係止する係止部２４２ｂ，２４２ｂ（図５４参照）を形成する。
弁座２４２を形成する円筒の側面とカートリッジ受け２１６の内面側の流路２１６ｂとの間を連通する流路２１９を形成し、弁開時に水質浄化用カートリッジ２３０の中央空間部２３２を通過した原水を弁座内に導入できるようにする。
流路切換弁２４０が組み込まれる流路切換弁組込部２１１ａと弁座２４２を形成する円筒とは、どちらも中心軸を同一中心軸とし、この同一の中心軸を把持部２１０の中心軸に対して交差方向に向け、弁座２４２内で移動する弁体２４３の移動方向が把持部２１０の中心軸に対して交差方向になるようにする。
【００６１】
これにより、弁閉時に、弁座２４２に内嵌された弁体２４３が弁内流路を閉じて流路切換弁２４０が閉状態になると、水質浄化用カートリッジ２３０の中央空間部２３２から外周側流路２３１に流出し、外周側流路２３１からカートリッジ受け外面側の流路２１６ａおよび浄水が流路２１８を通過して頭部２２０の空間２２０ａに流出できるようになる。また、これに対して、弁開時に、弁体２４３が弁内流路を開放して流路切換弁２４０が開状態になると、水質浄化用カートリッジ２３０の中央空間部２３２からカートリッジ受け内面側の流路２１６ｂおよび流路２１９を経て頭部２２０の空間２２０ａに流出するようになる。
【００６２】
筒部２１１と分離結合可能に形成されるホース接続側の筒部２１２は、図５９〜６１に示すように、略円筒形状で、ホース接続側の端部の外端面から外方に向けて厚肉円筒状のホース接続部２１４を同軸的に突出し、その先端部外周側にホース取付ねじ２１５を形成し、内面側には、上流側の端面２１２ｂに水質浄化用カートリッジ２３０のホース接続側に設けられた端部用キャップ２３０ｂの小径側嵌合部の寸法に合わせて内側の寸法を形成した円筒形状のカートリッジ受け２１７を突出し、水質浄化用カートリッジ２３０の収容時に端部用キャップ２３０ｂの嵌合部に嵌合して、水質浄化用カートリッジ２３０の上流側端部を同心的に位置固定することができるようにする。
【００６３】
ホース接続部２１４を設けた端部の反対側に位置する端部には、内面側に雌ねじ２１３ｃと筒部２１１の円筒部外面２１３ａに嵌合するための円筒内面２１３ｄとを形成して中継部２１３の雌側を形成する。
また、ホース接続部２１４の外周側には水栓本体のホルダ部に嵌め込み支持する際の位置決めリブとなる突起部２１４ａを突出する。
その他、流路切換弁２４０および吐出切換弁２５０ならびにこれらに関連した他の流路や部品については、第１実施形態と同様に構成する。
【００６４】
〔作用効果〕
このように構成した第２実施形態では、流路切換弁２４０の押しボタン２４１を指で押圧することによって浄水と原水とを容易に切り換えることができ、また、浄水と原水との切換えとは独立に、吐出切換弁２５０の切換レバー２５１を回動操作することによってストレート吐出とシャワー吐出とを切り換えることができるようになる。
【００６５】
流路切換弁２４０の押しボタン２４１を押圧して浄水吐出位置に押し下げた場合（図５２〜５４）には、流路切換弁２４０が弁閉状態となり、流路切換弁２４０のカートリッジ受け２１６に形成された内面側の流路２１６ｂに連通する流路が閉鎖状態となり、把持部２１０内に流入した混合水が、水質浄化用カートリッジ２３０の中央空間部２３２からフィルタ２３５および水質浄化材２３３を通過して水質を浄化しつつ水質浄化材２３３を通り抜けて外周側流路２３１に流出し、外周側流路２３１からカートリッジ受け２１６の外周側の流路２１６ａおよび流路２１８を介して頭部２２０に形成された空間２２０ａに流出し、吐出切換弁２５０の選択に従って、空間２２０ａから集合通過部材２２６を通過してストレート吐出口２２２またはシャワー吐出口２２３よりシャワープレート２２１の外部に吐出する。
【００６６】
また、流路切換弁２４０の押しボタン２４１を押圧解除して原水吐出位置に押し戻した場合（図６２〜６４）には、流路切換弁２４０が弁開状態となり、流路切換弁２４０に連通する流路２１９が開放状態となって、把持部２１０内に流入した混合水が、水質浄化用カートリッジ２３０の中央空間部２３２を通過し、カートリッジ受け２１６の内面側の流路２１６ｂから流路２１９を経由して弁座２４２の内部に至る流路を通過することにより、頭部２２０に形成された空間２２０ａに流出し、吐出切換弁２５０の選択に従って、ストレート吐出口２２２またはシャワー吐出口２２３を介してシャワープレート２２１の外部に吐出する。
その後、流路切換弁２４０の押しボタン２４１を把持部２１０の外方から押圧して、再度、浄水吐出位置に押し下げると、前述のような浄水吐出の場合に戻り、浄水を吐出するようになる。
また、吐出切換弁２５０の操作は、第１実施形態の場合と同様に操作することによって、ストレート吐出とシャワー吐出とを任意に選択することができる。
【００６７】
このようにして、流路切換弁２４０の押しボタン２４１を把持部２１０の外方より押圧することにより、浄水吐出と原水吐出とを容易に切り換えることができ、浄水吐出時には、混合水が水質浄化用カートリッジ２３０の中央空間部２３２から外周側流路２３１へ水質浄化材２３３を通過する際に浄化され、また、原水吐出時には、フィルタ２３５の表面側を通過する混合水によって、浄水吐出時に溜まったフィルタ表面の蓄積物が洗い流され、目詰りを起こりにくくするとともに水質浄化材２３３の劣化を防止するようになり、長期間、水質浄化性能を高レベルに維持できるようになる。
これに加えて、吐出切換弁２５０が流路切換弁２４０と完全に独立しているため、原水と浄水のどちらが吐出される場合であっても、ストレート吐出またはシャワー吐出のいずれかを選択して吐出させることができ、４種類の利用可能な形態が選択できるようになる。
【００６８】
〔第３実施形態〕
前記の第１，２実施形態は水質浄化用カートリッジの下流側に原水と浄水との吐出を選択する流路切換弁を設けているが、この第３実施形態では水質浄化用カートリッジの上流側に流路切換弁を設け、原水を水質浄化用カートリッジの外周側に形成された流路まで導き入れて外周側から中心部の中央空間部まで通過する間に浄化されるようにした場合について具体的に説明する。
以下の説明では、各部材の符号は３００番台の番号にして第１，２実施形態と識別することにし、また、流路切換弁の構成に係る部材以外の部材については、第１，２実施形態と同じ構成にするとともに符号を３００番台の下２桁の番号を同じにして説明を省略する。
【００６９】
〔構成〕
浄水機能付きシャワーヘッド３００は、図６５〜６６の外観図に示すように、図示しない混合水栓または混合水栓に設けられたホースに取付けできる端部を有する把持部３１０と、この把持部３１０の混合水栓接続側とは反対側の端部に一体的に形成されてシャワー吐出できる頭部３２０とを備える。
【００７０】
把持部３１０は、頭部３２０側に直結した筒部３１１と混合水栓接続側の筒部３１２とに分け、この両筒部３１１，３１２の結合部分には着脱自在かつ一体的に組み合わせることができるようにするねじ結合部を形成した中継部３１３を形成し、この中継部３１３の螺合を解除して筒部３１１と筒部３１２を分離することにより、把持部３１０の内部に水質浄化用カートリッジ３３０（図６７，６８参照）を収容することができるようになる。また、混合水栓接続側の端部には円筒状のホース接続部３１４を設け、その先端部にホース取付ねじ３１５を形成して、ホースとの着脱を容易にする。また、把持部３１０の水質浄化用カートリッジ３３０の上流側となるホース取付側の端部には、流路切換弁３４０の操作端である押しボタン３４１を突き出して、把持部３１０の外部から流路切換弁３４０を操作できるように形成する。
【００７１】
頭部３２０は、頂部が曲面に形成され主要部が略円筒形状に形成されて、内部に特別な突出部が設けられておらず、把持部３１０から流入した混合水が滞留する空間（空洞）３２０ａ（図６７，６８参照）を頭部外皮３２０ｂにより形成し、混合水が一様に吐出する吐出面を有して着脱自在なシャワープレート３２１を形成し、そのシャワープレート３２１の中央部にストレート吐出口３２２を設け、その周囲を囲むようにシャワー吐出口３２３を設け、ストレート吐出とシャワー吐出とを切り換える吐出切換弁３５０を内設し、その吐出切換弁３５０の操作部となる切換レバー３５１をシャワープレート３２１の外部に突出配置する。
【００７２】
この浄水機能付きシャワーヘッド３００では、図６７〜６９に示すように、把持部３１０に内蔵した水質浄化用カートリッジ３３０の外周側流路３３１を原水流路の一部とし、水質浄化用カートリッジ３３０の中央空間部３３２を浄水流路または原水流路の一部として利用する。
この場合の水質浄化用カートリッジ３３０は、中心軸と同心的に軸方向に長い貫通孔（中央空間部３３２）を設けて筒状に形成した活性炭を主成分とする水質浄化材３３３と、その外周面に不織布、スポンジまたは網等からなるフィルタ３３４を周設したものに、把持部内で同心的に嵌め合い位置固定するための端部用キャップ３３０ａ，３３０ｂを各端部に取り付けたものである。
【００７３】
把持部３１０の頭部３２０側に位置する筒部３１１には、内部の頭部側端面に筒部３１１と同軸な円筒形状に形成されたカートリッジ受け３１６を突設し、このカートリッジ受け３１６に水質浄化用カートリッジ３３０に設けられた下流側の端部用キャップ３３０ａの挿入端を差し込むことによって、水質浄化用カートリッジ３３０の下流側端部を芯出しおよび位置固定できるようにする。
そして、筒部３１２の上流側に位置する端部に配設された流路切換弁３４０の下流側の壁面に筒部３１２と同軸な円筒形状に形成したカートリッジ受け３１７を突設し、筒部３１１と筒部３１２との中継部３１３を螺合して、筒部３１２を筒部３１１に組付けることにより、水質浄化用カートリッジ３３０の上流側（ホース接続側）の端部用キャップ３３０ｂの挿入端をカートリッジ受け３１７に嵌合し、芯出しおよび位置固定して、把持部３１０の中に水質浄化用カートリッジ３３０を略同軸的に収容する。
【００７４】
これにより、カートリッジ受け３１６の外周側の空間３１６ａは、水質浄化用カートリッジ３３０の外周側流路３３１と連通して原水流路の閉鎖端部となり、さらにカートリッジ受け３１６の内面側の流路３１６ｂは、水質浄化用カートリッジ３３０の中央空間部３３２と連通して浄水流路の一部を形成するとともに原水流路の一部を形成する。
また、カートリッジ受け３１７の内面側の流路３１７ｂは、水質浄化用カートリッジ３３０の中央空間部３３２と連通して浄水流路の端部を形成するとともに原水流路の入口部を形成し、カートリッジ受け３１７の外周側の流路３１７ａは、水質浄化用カートリッジ３３０の外周側流路３３１と連通して原水流路の入口部を形成する。
【００７５】
頭部３２０の内部に形成された空間３２０ａの下流側であって吐出切換弁３５０を収容する部分の上流側には、空間３２０ａとシャワー吐出面上流側空間３２０ｃとの間を仕切る仕切部材３２５を設け、その仕切部材３２５の円盤状仕切板３２５ａの中央部に集合通過部材３２６を設ける。
仕切部材３２５の下流側に設けられる吐出切換弁３５０は、その弁体３５０ａが集合通過部材３２６の直下に位置できるように配置する。
そして、集合通過部材３２６および吐出切換弁３５０の弁体３５０ａが上下に配置された位置の、さらに下流側には、シャワープレート３２１に形成されたストレート吐出口３２２に連通するストレート吐出用流路形成部材３２７を立設する。
【００７６】
頭部３２０は、図７０〜７３に示すように、把持部側に筒部３１１を突出し、その突出した筒部３１１の外周面には、結合時の芯出し用の円筒部３１３ａを形成し、この中継部３１３の先端側に筒部３１２とねじ結合するための雄ねじ３１３ｂを形成し、さらに、円筒部３１３ａの軸方向の基部には、中継部３１３の漏止めに必要なＯリング（図６７参照）を嵌め込むＯリング溝３１３ｆを刻設して、中継部３１３の雄側を形成する。
頭部３２０と筒部３１１との境界となる壁面には、筒部側に突出した筒部３１１と同軸な円筒形状のカートリッジ受け３１６を突設し、カートリッジ受け３１６の外側の空間３１６ａは壁面により閉鎖されたままの状態にしておき、カートリッジ受け３１６の内部を開口して、カートリッジ受け３１６の内側を頭部３２０と筒部３１１との間の流路３１６ｂとして形成する。
そして、頭部外皮３２０ｂにより、頭部３２０の頂部が曲面に形成され主要部が略円筒状に形成されて、内部に特別な突出部が設けられていない空間を形成して、頭部３２０の吐出側には仕切板や吐出切換弁等を収容することができるようにする。
【００７７】
筒部３１１と分離結合可能に形成される筒部３１２は、図７４〜７８に示すように、略円筒形状で、ホース接続側の端部に円形の孔を設けた端面３１２ｂを有し、その端面から円筒状のホース接続部３１４を突出し、その先端部にホース取付ねじ３１５を形成し、ホース接続部３１４の外周側には水栓本体のホルダ部に嵌め込み支持する際の位置決めリブとなる突起部３１４ａを突設する。
筒部３１２の下流側の端部には、中継部３１３の雌側を形成し、その内面側に雌ねじ３１３ｃと、嵌合用の円筒内面３１３ｄを雌ねじ形成箇所の先端側に形成し、筒部３１１の雄側の中継部３１３に螺着して、把持部３１０を形成することができるようにする。
筒部３１２の上流側の端部には、端面３１２ｂに一側面を接するように配置して筒部３１２の中心軸に対して略垂直な方向に中心軸を向けた平面形状が略正方形の有底角筒形状に形成された流路切換弁組込部３１２ａと、この流路切換弁組込部３１２ａと同軸的に配置して、上端部を流路切換弁組込部３１２ａの下端部に底壁を貫通して挿入した、弁体嵌合用に形成された有底円筒形状の弁座３４２とを配設する。
【００７８】
そして、水質浄化用カートリッジ３３０のホース接続側に設けられた端部用キャップ３３０ｂに形成されている端縁部（挿入端部）の外径寸法に合わせて内径寸法を形成した、有底円筒形状のカートリッジ受け３１７を筒部３１２と同軸的に配置するとともに開口側を下流側に向け、カートリッジ受け３１７の有底側を流路切換弁組込部３１２ａの最下流側の外端面に一体的に形成する。
カートリッジ受け３１７の下端部と弁座３４２の下端部とにそれぞれ開口３１７ｃと開口３４２ａを穿設し、それらの開口３１７ｃと開口３４２ａとの間を連通する角筒形状の流路３１２ｃを設けて、弁座３４２の内部から流路３１２ｃを経由してカートリッジ受け３１７の内面側に形成された流路３１７ｂに達する混合水の流路を形成する。
【００７９】
流路切換弁組込部３１２ａの底板よりも下方に位置し、かつ、筒部３１２の端面３１２ｂ側に位置する弁座３４２の側周面には、略中央部に半周にわたる比較的広幅の切込みにより形成した開口３４２ａを設け、弁開状態では、ホース接続側から筒部３１２の内部に流入した混合水が、開口３４２ａから弁座３４２の内部に流入し、開口３４２ｃから流出して、流路３１２ｃを介してカートリッジ受け３１７の内面側に形成された流路３１７ｂを通過する。また、弁閉状態では弁座３４２の内部に流入せずに、弁座３４２の外周側および下方を介してカートリッジ受け３１７の外周側に形成された流路３１７ａを通過する。
【００８０】
原水と浄水とを切り換える流路切換弁３４０は、弁座３４２の内外に取り付ける各部材が第１，２実施形態で使用されたものと同一の部材を利用する。
すなわち、流路切換弁組込部３１２ａに固定される弁座３４２と、弁座３４２に組み込まれて押しボタン３４１により動かされる弁体３４３と、弁座３４２の底面と弁体３４３の下端との間に介装されて押しボタン３４１の押圧力が解除されたときに弁体３４３を押し戻すコイルスプリング３４４と、押しボタン３４１と弁体３４３との間に介装されて弁体３４３の軸方向の位置を変更する弁体位置切換機構３４５とからなる。
【００８１】
頭部３２０の内部に組み込まれる仕切部材３２５は、円盤状仕切板３２５ａの中央部にシャワー吐出側またはストレート吐出側への入口部へ移行するための集合通過部材３２６を嵌合する。そして、外周縁の下側にシャワープレート３２１を螺合できるようにするとともに、ねじ形成箇所の上側にはＯリングにより漏止めができるようにする。
仕切部材３２５の下流側に位置する吐出面形成部材としてのシャワープレート３２１は、平板状の円板部から外周縁を立ち上げた形状に形成し、円板部の中央部にストレート吐出口３２２を穿設し、このストレート吐出口３２２に隣接して吐出切換弁３５０の軸を貫通させて軸支し、ストレート吐出口３２２と軸支箇所とを除いた面のストレート吐出口３２２の周囲にシャワー吐出口３２３となる小孔を多数個略均等な間隔で穿設する。
【００８２】
さらに、ストレート吐出口３２２の上部には、ストレート吐出用流路形成部材３２７を設け、シャワープレート中央部にストレート吐出用流路形成部材３２７を立設して、ストレート吐出側の流路（ストレート吐出流路３２７ｂ）とシャワー吐出側の流路（シャワー吐出面上流側空間３２０ｃ）とを仕切ることができるようにする。
シャワープレート中央部に立設するストレート吐出用流路形成部材３２７は、上端縁が内面側に縮径された端部を有する円筒形状に形成され、円筒部の内部がストレート吐出流路３２７ｂとして利用され、その上端に形成された開口３２７ａの開口径が円筒部分の内径よりも小さくなるように形成して、吐出切換弁３５０の弁体３５０ａを載置し易くする。
【００８３】
吐出切換弁３５０は、シャワープレート３２１を貫通して軸回りに回動自在に支持される弁軸を一体に設けた切換レバー３５１と、集合通過部材３２６とストレート吐出用流路形成部材３２７との間に設けられた隙間に配置できるように上面を浅い凹面に形成した薄い皿状に形成した弁体３５０ａとに分割される。
この吐出切換弁３５０は、弁体３５０ａを集合通過部材３２６から僅かに隙間をあけた直近の下流に配置し、弁体３５０ａの下面をストレート吐出用流路形成部材３２７の上端に形成された開口３２７ａに接触できる直近の位置に配置して、ストレート吐出用流路形成部材３２７の蓋として上部から覆い被さることができるようにし、また、切換レバー３５１の操作によって、弁体３５０ａが開口３２７ａの真上の位置から弁体３５０ａの全体が開口３２７ａの位置から外れるまでの範囲で、弁体３５０ａがストレート吐出用流路形成部材３２７の上端に出入り自在に回動できるように、切換レバー３５１の回動角度を設定する。
【００８４】
〔作用効果〕
このように構成した第３実施形態では、把持部３１０のホース接続側の端部に設けられた流路切換弁３４０の押しボタン３４１を押圧操作することによって浄水と原水とを切り換えることができ、また、浄水と原水との切換えとは独立に、吐出切換弁３５０の切換レバー３５１を回動操作することによってストレート吐出とシャワー吐出とを切り換えることができるようになる。
【００８５】
いま、流路切換弁３４０の設定位置を、浄水吐出位置（押しボタン押下げ状態）に合わせた場合（図６５〜６９）には、流路切換弁３４０が弁閉状態となり、把持部３１０の上流側に設けられたカートリッジ受け３１７の内面側に形成された流路３１７ｂの上流側が閉鎖状態となって、把持部３１０内に流入した混合水が、水質浄化用カートリッジ３３０の外周側流路３３１からフィルタ３３４および水質浄化材３３３を通過して水質を浄化しつつ水質浄化材３３３の中央空間部３３２に流出して、カートリッジ受け３１６の内面側の流路３１６ｂを介して頭部３２０に形成された空間３２０ａに流出し、吐出切換弁３５０の選択に従って、空間３２０ａから集合通過部材３２６を通過してストレート吐出口３２２またはシャワー吐出口３２３よりシャワープレート３２１の外部に吐出する。
【００８６】
また、流路切換弁３４０の押しボタン３４１を押圧解除して原水吐出位置（押しボタン突出状態）に押し戻した場合（図７９〜８３）には、流路切換弁３４０が弁開状態となり、カートリッジ受け３１７の内面側に形成された流路３１７ｂに連通する流路が開放状態となって、把持部３１０内に流入した混合水が、弁座３４２の側周面に形成された開口３４２ａから弁座３４２内に流入し、弁座３４２の下端部に穿設された開口３４２ｃから、流路３１２ｃを介して、カートリッジ受け３１７の内面側に形成された流路３１７ｂに流出し、さらに水質浄化材３３３の中央空間部３３２と、下流側に設けられたカートリッジ受け３１６の内面側に形成された流路３１６ｂとを介して、頭部３２０に形成された空間３２０ａに流出し、吐出切換弁３５０の選択に従って、空間３２０ａから集合通過部材３２６を通過してストレート吐出口３２２またはシャワー吐出口３２３よりシャワープレート３２１の外部に吐出する。
その後、流路切換弁３４０の押しボタン３４１を把持部３１０の外方から押圧して、再度、浄水吐出位置に押し下げると、前述のような浄水吐出の場合に戻り、浄水を吐出するようになる。
【００８７】
また、吐出切換弁３５０の操作は、流路切換弁３４０の操作とは独立に操作でき、ストレート吐出とシャワー吐出とを任意に設定することができる。
まず、切換レバー３５１を操作してストレート吐出側に回動すると、弁体３５０ａがストレート吐出用流路形成部材３２７の開口３２７ａの位置から外れ、集合通過部材３２６から流出する混合水がストレート吐出用流路形成部材３２７の開口３２７ａへ流入し、ストレート吐出流路３２７ｂを通過してストレート吐出口３２２から吐出する。
そして、切換レバー３５１がストレート吐出側に設定されている場合に、切換レバー３５１を反対方向へ操作してシャワー吐出側に回動すると、図６７または８１に示すように、弁体３５０ａがストレート吐出用流路形成部材３２７の開口３２７ａの上部に位置して開口３２７ａを塞ぎ、集合通過部材３２６から流出する混合水が弁体３５０ａに阻まれてストレート吐出用流路形成部材３２７の周囲に流出し、仕切部材３２５とシャワープレート３２１によって形成されたシャワー吐出面上流側空間３２０ｃを介してシャワー吐出口３２３から吐出するようになる。
その後、切換レバー３５１を操作してストレート吐出側に回動すると、前述のように、ストレート吐出口３２２から吐出するようになる。
【００８８】
これにより、流路切換弁３４０の押しボタン３４１を把持部３１０の外方より押圧することにより、浄水吐出と原水吐出とを容易に切り換えることができ、浄水吐出時には、混合水が水質浄化用カートリッジ３３０の外周側流路３３１から中央空間部３３２へ水質浄化材３３３を通過する際に浄化されるようになる。
これに加えて、吐出切換弁３５０が流路切換弁３４０と完全に独立しているため、原水と浄水のどちらが吐出される場合であっても、ストレート吐出またはシャワー吐出のいずれかを選択して吐出させることができ、４種類の利用可能な形態が選択できる。
【００８９】
〔第４実施形態〕
前記第３実施形態は水質浄化用カートリッジの外周側を浄化前の上流側流路として形成されているが、この第４実施形態では、水質浄化用カートリッジの上流側に流路切換弁を設けるとともに水質浄化用カートリッジの中央空間部を浄化前の上流側流路として形成した場合について具体的に説明する。
以下の説明では、各部材の符号は４００番台の番号にして第３実施形態と識別することにし、また、流路切換弁の構成に係る部材以外の部材については、第３実施形態と同じ構成にするとともに符号を４００番台の下２桁の番号を同じにして説明を省略する。
【００９０】
〔構成〕
浄水機能付きシャワーヘッド４００は、図８４〜８６の矢視断面図に示すように、図示しない混合水栓または混合水栓に設けられたホースに取付けできる端部を有する把持部４１０と、この把持部４１０の混合水栓接続側とは反対側の端部でシャワー吐出できる頭部４２０とを備える。
【００９１】
把持部４１０は、頭部４２０に直結した筒部４１１と混合水栓接続側の筒部４１２とに分け、この両筒部４１１，４１２の結合部分には着脱自在かつ一体的に組み合わせることができるようにするねじ結合部を形成した中継部４１３を形成する。この中継部４１３の螺合を解除して筒部４１１と筒部４１２を分離することにより、把持部４１０の内部に水質浄化用カートリッジ４３０を収容することができるようになる。
また、混合水栓接続側の端部には円筒状のホース接続部４１４を設け、その先端部にホース取付ねじ４１５を形成して、ホースとの着脱を容易にする。また、把持部４１０のホース取付側の端部には、水質浄化用カートリッジ４３０の上流側に流路切換弁４４０を設け、その操作端である押しボタン４４１を把持部外周面より突出して、把持部４１０の外部から流路切換弁４４０を操作できるように形成する。
【００９２】
頭部４２０は、頂部が曲面に形成され主要部が略円筒形状に形成されて、内部に特別な突出部が設けられておらず、把持部４１０から流入した混合水が滞留する空間（空洞）４２０ａを頭部外皮４２０ｂにより形成し、混合水が一様に吐出する吐出面を有して着脱自在なシャワープレート４２１を形成し、そのシャワープレート４２１の中央部にストレート吐出口４２２を設け、その周囲を囲むようにシャワー吐出口４２３を設け、ストレート吐出とシャワー吐出とを切り換える吐出切換弁４５０を内設し、その吐出切換弁４５０の操作部となる切換レバー４５１をシャワープレート４２１の外部に突出配置する。
【００９３】
この浄水機能付きシャワーヘッド４００では、把持部４１０に内蔵した水質浄化用カートリッジ４３０の中央空間部４３２を原水流路の一部とし、水質浄化用カートリッジ４３０の外周側流路４３１を浄水流路または原水流路の一部として利用する。
この場合の水質浄化用カートリッジ４３０は、中心軸と同心的に軸方向に長い貫通孔（中央空間部４３２）を設けて筒状に形成した活性炭を主成分とする水質浄化材４３３と、その中央空間部４３２の内面に不織布、スポンジまたは網等からなるフィルタ４３５を周設したものに、把持部内で同心的に嵌め合い、位置固定するための端部用キャップ４３０ａ，４３０ｂを各端部に取り付けたものである。
【００９４】
把持部４１０の頭部側に位置する筒部４１１には、内部の頭部４２０との境界位置に周上等間隔３個の平板状に形成したリブ４１１ｂ，…，４１１ｂを突設し、このリブ突設位置に水質浄化用カートリッジ４３０に設けられた下流側の端部用キャップ４３０ａを差し込むことによって、水質浄化用カートリッジ４３０の下流側端部を芯出しおよび位置固定できるようにする。
そして、筒部４１２の上流側に位置する端部に配設された流路切換弁４４０の下流側に筒部４１２と同軸な円筒形状に形成したカートリッジ受け４１７を突設し、このカートリッジ受け４１７の上流側の外周端には流路切換弁組込部４１２ａの下流側に接するとともに筒部４１２の内壁面に達するフランジを形作る壁面４１８を設けて筒部４１２を軸方向に仕切ることにより水質浄化用カートリッジ４３０の内外の流路を規制し、筒部４１１と筒部４１２との中継部４１３を螺合して、筒部４１２を筒部４１１に組付けることにより、水質浄化用カートリッジ４３０の上流側（混合水栓接続側）の端部用キャップ４３０ｂの挿入端をカートリッジ受け４１７に嵌合し、芯出しおよび位置固定して、把持部４１０の中に水質浄化用カートリッジ４３０を略同軸的に収容する。
【００９５】
これにより、リブ４１１ｂ配置箇所の周辺は、浄水流路の一部を形成するとともに原水流路の一部を形成する。
また、カートリッジ受け４１７の内面側の流路４１７ｂは、水質浄化用カートリッジ４３０の中央空間部４３２と連通して浄化用の原水流路の入口部を形成し、カートリッジ受け４１７の外周側の流路４１７ａは、水質浄化用カートリッジ４３０の外周側流路４３１と連通して流路切換弁下流側の原水流路入口部を形成する。
【００９６】
頭部４２０の内部に形成された空間４２０ａの下流側であって吐出切換弁４５０を収容する部分の上流側には、空間４２０ａとシャワー吐出面上流側空間４２０ｃとの間を仕切る仕切部材４２５を設け、その仕切部材４２５の円盤状仕切板４２５ａの中央部に集合通過部材４２６を設ける。
仕切部材４２５の下流側に設けられる吐出切換弁４５０は、その弁体４５０ａが集合通過部材４２６の直下に位置できるように配置する。
そして、集合通過部材４２６および吐出切換弁４５０の弁体４５０ａが上下に配置された位置の、さらに下流側には、シャワープレート４２１に形成されたストレート吐出口４２２に連通するストレート吐出用流路形成部材４２７を立設する。
【００９７】
頭部４２０は、図８７〜９１に示すように、把持部側に筒部４１１を突出し、その突出した筒部４１１の外周面には、結合時の芯出し用の円筒部４１３ａを形成し、この中継部４１３の先端側に筒部４１２とねじ結合するための雄ねじ４１３ｂを形成し、さらに、円筒部４１３ａの軸方向の基部には、中継部４１３の漏止めに必要なＯリング（図８４参照）を嵌め込むＯリング溝４１３ｆを刻設して、中継部４１３の雄側を形成する。
頭部４２０と筒部４１１との境界となる周壁面には、筒部側における内面に周上等間隔に３個のリブ４１１ｂ，…，４１１ｂを突出する。各リブ４１１ｂは水質浄化用カートリッジ４３０の下流側の端部用キャップ４３０ａの外径寸法に合わせて内接円の径を設定し、端部用キャップ４３０ａが各リブ４１１ｂの先端面により支持されるように、内壁面からの高さを調節し、そして、軸方向への移動を抑えるための軸方向に対して垂直な面を有する段差当接部４１１ｃを設けて、２段の高さを有する支持部材に成形する。
そして、頭部外皮４２０ｂにより、頭部４２０の頂部が曲面に形成され主要部が略円筒状に形成されて、内部に特別な突出部が設けられていない空間を形成して、頭部４２０の吐出側には仕切板や吐出切換弁等を収容することができるようにする。
【００９８】
筒部４１１と分離結合可能に形成される筒部４１２は、図９２〜９６に示すように、略円筒形状で、ホース接続側の端部に円形の孔を設けた端面４１２ｂを有し、その端面から円筒状のホース接続部４１４を突出し、その先端部にホース取付ねじ４１５を形成し、ホース接続部４１４の外周側には水栓本体のホルダ部に嵌め込み支持する際の位置決めリブとなる突起部４１４ａを突設する。
筒部４１２の下流側の端部には、中継部４１３の雌側を形成し、その内面側に雌ねじ４１３ｃと、嵌合用の円筒内面４１３ｄを雌ねじ形成箇所の先端側に形成し、筒部４１１の雄側の中継部４１３に螺着して、把持部４１０を形成することができるようにする。
筒部４１２の上流側の端部には、端面４１２ｂに一側面を接するように配置して筒部４１２の中心軸に対して略垂直な方向に中心軸を向けた平面形状が略正方形の有底角筒形状に形成された流路切換弁組込部４１２ａと、この流路切換弁組込部４１２ａと同軸的に配置して、上端部を流路切換弁組込部４１２ａの下端部に底壁を貫通して挿入した、弁体嵌合用に形成された有底円筒形状の弁座４４２とを配設する。
【００９９】
そして、水質浄化用カートリッジ４３０の上流側に設けられた端部用キャップ４３０ｂに形成されている端縁部（挿入端部）の外径寸法に合わせて内径寸法を形成した、有底円筒形状のカートリッジ受け４１７を筒部４１２と同軸的に配置するとともに開口側を下流側に向け、カートリッジ受け４１７の有底側を流路切換弁組込部４１２ａの最下流側の外端面に一体的に形成する。
カートリッジ受け４１７の外周側に位置する壁面４１８の下端部と弁座４４２の下端部とにそれぞれ開口４１８ａと開口４４２ｃを設け、それらの開口４１８ａと開口４４２ｃとの間を連通する角筒形状の流路４１２ｄを設けて、弁座４４２の内部から流路４１２ｄを経由してカートリッジ受け４１７の外面側に形成された流路４１７ａの下方に達する混合水の流路を形成する。
流路切換弁組込部４１２ａの底板よりも下方に位置し、かつ、筒部４１２の端面４１２ｂ側に位置する弁座４４２の側周面には、略中央部に半周にわたる比較的広幅の切込みにより形成した開口４４２ａを設け、弁開状態では、ホース接続側から筒部４１２の内部に流入した混合水が、開口４４２ａから弁座４４２の内部に流入し、開口４４２ｃから流出して、流路４１２ｄを介してカートリッジ受け４１７の外面側に形成された流路４１７ａを通過する。また、弁閉状態では弁座４４２の内部に流入せずに、弁座４４２の外周側を介してカートリッジ受け４１７の内面側に形成された流路４１７ｂを通過する。
【０１００】
原水と浄水とを切り換える流路切換弁４４０は、弁座４４２の内外に取り付ける各部材が第１，２実施形態で使用されたものと同一の部材を利用する。
すなわち、流路切換弁組込部４１２ａに固定される弁座４４２と、弁座４４２に組み込まれて押しボタン４４１により動かされる弁体４４３と、弁座４４２の底面と弁体４４３の下端との間に介装されて押しボタン４４１の押圧力が解除されたときに弁体４４３を押し戻すコイルスプリング４４４と、押しボタン４４１と弁体４４３との間に介装されて弁体４４３の軸方向の位置を変更する弁体位置切換機構４４５とからなる。
【０１０１】
頭部４２０の内部に組み込まれる仕切部材４２５は、円盤状仕切板４２５ａの中央部にシャワー吐出側またはストレート吐出側への入口部へ移行するための集合通過部材４２６を嵌合する。そして、外周縁の下側にシャワープレート４２１を螺合できるようにするとともに、ねじ形成箇所の上側にはＯリングにより漏止めができるようにする。
仕切部材４２５の下流側に位置する吐出面形成部材としてのシャワープレート４２１は、平板状の円板部から外周縁を立ち上げた形状に形成し、円板部の中央部にストレート吐出口４２２を穿設し、このストレート吐出口４２２に隣接して吐出切換弁４５０の軸を貫通させて軸支し、ストレート吐出口４２２と軸支箇所とを除いた面のストレート吐出口４２２の周囲にシャワー吐出口４２３となる小孔を多数個略均等な間隔で穿設する。
【０１０２】
さらに、ストレート吐出口４２２の上部には、ストレート吐出用流路形成部材４２７を設け、シャワープレート中央部にストレート吐出用流路形成部材４２７を立設して、ストレート吐出側の流路（ストレート吐出流路４２７ｂ）とシャワー吐出側の流路（シャワー吐出面上流側空間４２０ｃ）とを仕切ることができるようにする。
シャワープレート中央部に立設するストレート吐出用流路形成部材４２７は、上端縁が内面側に縮径された端部を有する円筒形状に形成され、円筒部の内部がストレート吐出流路４２７ｂとして利用され、その上端に形成された開口４２７ａの開口径が円筒部分の内径よりも小さくなるように形成して、吐出切換弁４５０の弁体４５０ａを載置し易くする。
【０１０３】
吐出切換弁４５０は、シャワープレート４２１を貫通して軸回りに回動自在に支持される弁軸を一体に設けた切換レバー４５１と、集合通過部材４２６とストレート吐出用流路形成部材４２７との間に設けられた隙間に配置できるように上面を浅い凹面に形成した薄い皿状に形成した弁体４５０ａとに分割される。
この吐出切換弁４５０は、弁体４５０ａを集合通過部材４２６から僅かに隙間をあけた直近の下流に配置し、弁体４５０ａの下面をストレート吐出用流路形成部材４２７の上端に形成された開口４２７ａに接触できる直近の位置に配置して、ストレート吐出用流路形成部材４２７の蓋として上部から覆い被さることができるようにし、また、切換レバー４５１の操作によって、弁体４５０ａが開口４２７ａの真上の位置から弁体４５０ａの全体が開口４２７ａの位置から外れるまでの範囲で、弁体４５０ａがストレート吐出用流路形成部材４２７の上端に出入り自在に回動できるように、切換レバー４５１の回動角度を設定する。
【０１０４】
〔作用効果〕
このように構成した第４実施形態では、把持部４１０のホース接続側の端部に設けられた流路切換弁４４０の押しボタン４４１を押圧操作することによって浄水と原水とを切り換えることができ、また、浄水と原水との切換えとは独立に、吐出切換弁４５０の切換レバー４５１を回動操作することによってストレート吐出とシャワー吐出とを切り換えることができるようになる。
【０１０５】
いま、流路切換弁４４０の設定位置を、浄水吐出位置（押しボタン押下げ状態）に合わせた場合（図８４〜８６）には、流路切換弁４４０が弁閉状態となり、把持部４１０の上流側に設けられたカートリッジ受け４１７の内面側に形成された流路４１７ｂの上流側が開放状態となって、把持部４１０内に流入した混合水が、流路４１７ｂを介して水質浄化用カートリッジ４３０の中央空間部４３２に流入し、この中央空間部４３２からフィルタ４３５および水質浄化材４３３を通過して水質を浄化しつつ外周側流路４３１に流出し、各リブ４１１ｂ，…，４１１ｂの間を通過して頭部４２０に形成された空間４２０ａに流出し、吐出切換弁４５０の選択に従って、空間４２０ａから集合通過部材４２６を通過してストレート吐出口４２２またはシャワー吐出口４２３よりシャワープレート４２１の外部に吐出する。
【０１０６】
また、流路切換弁４４０の押しボタン４４１を押圧解除して原水吐出位置（押しボタン突出状態）に押し戻した場合（図９７〜９９）には、流路切換弁４４０が弁開状態となり、弁座４４２からカートリッジ受け４１７の外周側に形成された流路４１７ａに連通する流路４１２ｄが開放状態となって、把持部４１０内に流入した混合水が、弁座４４２の側周面に形成された開口４４２ａから弁座４４２内に流入し、弁座４４２の下端部に穿設された開口４４２ｃから、流路４１２ｄを介して、カートリッジ受け４１７の外周側に形成された流路４１７ａに流出し、さらに水質浄化用カートリッジ４３０の外周側流路４３１から各リブ４１１ｂの間を通過して、頭部４２０に形成された空間４２０ａに流出し、吐出切換弁４５０の選択に従って、空間４２０ａから集合通過部材４２６を通過してストレート吐出口４２２またはシャワー吐出口４２３よりシャワープレート４２１の外部に吐出する。
その後、流路切換弁４４０の押しボタン４４１を把持部４１０の外方から押圧して、再度、浄水吐出位置に押し下げると、前述のような浄水吐出の場合に戻り、浄水を吐出するようになる。
【０１０７】
また、吐出切換弁４５０の操作は、流路切換弁４４０の操作とは独立に操作でき、ストレート吐出とシャワー吐出とを任意に設定することができる。
まず、切換レバー４５１を操作してストレート吐出側に回動すると、弁体４５０ａがストレート吐出用流路形成部材４２７の開口４２７ａの位置から外れ、集合通過部材４２６から流出する混合水がストレート吐出用流路形成部材４２７の開口４２７ａへ流入し、ストレート吐出流路４２７ｂを通過してストレート吐出口４２２から吐出する。
【０１０８】
そして、切換レバー４５１がストレート吐出側に設定されている場合に、切換レバー４５１を反対方向へ操作してシャワー吐出側に回動すると、図８４または９７に示すように、弁体４５０ａがストレート吐出用流路形成部材４２７の開口４２７ａの上部に位置して開口４２７ａを塞ぎ、集合通過部材４２６から流出する混合水が弁体４５０ａに阻まれてストレート吐出用流路形成部材４２７の周囲に流出し、仕切部材４２５とシャワープレート４２１によって形成されたシャワー吐出面上流側空間４２０ｃを介してシャワー吐出口４２３から吐出するようになる。
その後、切換レバー４５１を操作してストレート吐出側に回動すると、前述のように、ストレート吐出口４２２から吐出するようになる。
【０１０９】
これにより、流路切換弁４４０の押しボタン４４１を把持部４１０の外方より押圧することにより、浄水吐出と原水吐出とを容易に切り換えることができ、浄水吐出時には、混合水が水質浄化用カートリッジ４３０の中央空間部４３２から外周側流路４３１へ水質浄化材４３３を通過する際に浄化されるようになり、また、原水吐出時には、水質浄化用カートリッジ４３０の外周側流路４３１を通過することによって、操作性良く浄水吐出と原水吐出との切換えができる。
これに加えて、吐出切換弁４５０が流路切換弁４４０と完全に独立しているため、原水と浄水のどちらが吐出される場合であっても、ストレート吐出またはシャワー吐出のいずれかを選択して吐出させることができ、４種類の利用可能な形態が容易に選択できる。
【０１１０】
【発明の効果】
以上のように本発明に係る浄水機能付きシャワーヘッドは、シャワー吐出口を有する頭部と水質浄化用カートリッジを交換可能に収容する把持部とを一体に形成し、この把持部の水質浄化用カートリッジ収容箇所の上流側または下流側に浄水と原水とを切り換える流路切換弁を設け、この流路切換弁を前記把持部の中心軸に対して交差方向に移動する弁体を設けた平行移動式遮断弁として形成するとともに流路切換弁配置位置の外部に前記流路切換弁の押しボタン式操作部を配置して前記流路切換弁を外部より操作可能に形成し、さらに前記頭部の吐出口の上流側に前記流路切換弁とは独立に機能してシャワー吐出とストレート吐出とを切り換える吐出切換弁を設け、この吐出切換弁を弁座流路に対して交差方向に弁体が移動する遮断弁として形成するとともに吐出切換弁配置位置近傍の外部に前記吐出切換弁の操作部を配置して前記吐出切換弁を外部より操作可能に形成したことにより、流路切換弁の押しボタンを押圧することにより容易に浄水と原水とを切り換えることができ、また、吐出切換弁の操作部を操作して容易にシャワー吐出とストレート吐出とを切り換えることができて、操作性が良く、流路切換弁と吐出切換弁との部材の形状も簡単な形状で済み、流路切換機構も簡素化されて、取扱容易かつ製造容易となり、コストを低減化できる。
【０１１１】
また、本発明に係る浄水機能付きシャワーヘッドは、前記流路切換弁が前記把持部に固定された筒状の弁座と、この弁座に内嵌されて前記筒状の弁座の軸方向に移動する弁体とを有し、原水と浄水のいずれか一方を弁座の内部を通過する流路として形成したことにより、流路切換弁の押しボタンを押圧することにより容易に浄水と原水とを切り換えることができ、操作性が良く、部材の形状も簡単な形状で済み、流路切換機構も簡素化されて、取扱容易かつ製造容易とすることができる。
また、本発明に係る浄水機能付きシャワーヘッドは、前記水質浄化用カートリッジには外周面にフィルタを設け、外周側から内面側へ抜ける浄化流路を形成したことにより、流路構成が簡素化できるとともにコンパクトにでき、把持部の構造が単純になって、水質浄化材の内容物をより多く収納できる。また、外周側の流路を原水吐出と浄水吐出との両方の場合に共用される流路として形成した場合には、浄水吐出時に蓄積された目詰りを引き起こすような固形物質を原水吐出時に洗い流すことができ、目詰りしにくくするとともに水質浄化用カートリッジの寿命を長くすることができる。
【０１１２】
また、本発明に係る浄水機能付きシャワーヘッドは、前記水質浄化用カートリッジには内面にフィルタを設け、内面側から外周面側へ抜ける浄化流路を形成したことにより、流路構成が簡素化できるとともにコンパクトにでき、把持部の構造が単純になって、水質浄化材の内容物をより多く収納できる。また、内面側の流路を原水吐出と浄水吐出との両方の場合に共用される流路として形成した場合には、浄水吐出時に蓄積された目詰りを引き起こすような固形物質を原水吐出時に洗い流すことができ、目詰りしにくくするとともに水質浄化用カートリッジの寿命を長くすることができる。
また、本発明に係る浄水機能付きシャワーヘッドは、前記吐出切換弁を弁座流路に対して平行な軸の回りに弁体を回動する回動式遮断弁として形成したことにより、弁体を薄板状に形成して収容空間を流路方向に圧縮することができ、頭部の大きさをより小さくすることができる。
また、本発明に係る浄水機能付きシャワーヘッドは、前記吐出切換弁を弁軸に対して前記弁体の板面を略垂直に向け、アーム部を介して前記弁軸から離間した位置に前記板面を配置して、前記弁体を弁軸回りに回動する回動式遮断弁として形成したことにより、弁体の回動角に対する弁体の移動距離が大きくとれて、離間移動により弁座から弁体を外すことができ、狭い収容空間に設けた弁体の動作を効果的にして、弁座から離間する場合に少ない回転角で弁座から弁体を外すことができ、混合水の出力方向であるシャワー吐出とストレート吐出と効果的に切り換えることができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態の浄水機能付きシャワーヘッドを示す側面図である。
【図２】同上浄水機能付きシャワーヘッドを示す平面図である。
【図３】同上浄水機能付きシャワーヘッドを浄水吐出時の状態で示す側面断面図（図２のＢ−Ｂ矢視図）である。
【図４】同上浄水機能付きシャワーヘッドを浄水吐出時の状態で示す平面断面図（図１のＡ−Ａ矢視図）である。
【図５】同上浄水機能付きシャワーヘッドの浄水吐出時の状態における流路切換弁の位置で示す横断面図（図１のＣ−Ｃ矢視図）である。
【図６】同上浄水機能付きシャワーヘッドに組み付けられる流路切換弁を示す分解斜視図である。
【図７】同上浄水機能付きシャワーヘッドの頭部を示す上平面図である。
【図８】同上浄水機能付きシャワーヘッドの頭部を示す下平面図である。
【図９】同上浄水機能付きシャワーヘッドの頭部を示す側面断面図（図７のＤ−Ｄ矢視図）である。
【図１０】同上浄水機能付きシャワーヘッドの頭部に形成された流路切換弁の流入位置における平面断面図（図９のＥ−Ｅ矢視図）である。
【図１１】同上浄水機能付きシャワーヘッドの頭部と把持部の筒部との間に形成された隔壁の位置における横断面図（図９のＦ−Ｆ矢視図）である。
【図１２】同上浄水機能付きシャワーヘッドの頭部に形成された流路切換弁配設位置における横断面図（図９のＧ−Ｇ矢視図）である。
【図１３】同上浄水機能付きシャワーヘッドにおける流路切換弁の押しボタンを拡大して示す下平面図である。
【図１４】同上浄水機能付きシャワーヘッドにおける流路切換弁の押しボタンを拡大して示す側面断面図（図１３のＨ−Ｈ矢視図）である。
【図１５】同上浄水機能付きシャワーヘッドにおける流路切換弁の押しボタンを拡大して示す正面断面図（図１３のＩ−Ｉ矢視図）である。
【図１６】同上浄水機能付きシャワーヘッドにおける流路切換弁の弁体を拡大して示す正面図である。
【図１７】同上浄水機能付きシャワーヘッドにおける流路切換弁の弁体を拡大して示す側面図である。
【図１８】同上浄水機能付きシャワーヘッドにおける流路切換弁の弁体を拡大して示す上平面図である。
【図１９】同上浄水機能付きシャワーヘッドにおける流路切換弁の弁体を拡大して示す下平面図である。
【図２０】同上浄水機能付きシャワーヘッドにおける流路切換弁の弁体を拡大して示す側面断面図（図１６のＪ−Ｊ矢視図）である。
【図２１】同上浄水機能付きシャワーヘッドにおける弁体位置切換機構の第１切換こまを拡大して示す説明図であり、（Ａ）は側面図、（Ｂ）は正面図、（Ｃ）は後正面図、（Ｄ）は上平面図、（Ｅ）は下平面図である。
【図２２】同上浄水機能付きシャワーヘッドにおける弁体位置切換機構の第２切換こまを拡大して示す説明図であり、（Ａ）は側面図、（Ｂ）は後正面図、（Ｃ）は上平面図、（Ｄ）は下平面図である。
【図２３】同上浄水機能付きシャワーヘッドにおける弁体位置切換機構の切換リングを拡大して示す説明図であり、（Ａ）は側面図、（Ｂ）は後正面図、（Ｃ）は上平面図、（Ｄ）は下平面図、（Ｅ）は正面断面図（図２３（Ｃ）のＫ−Ｋ矢視図）である。
【図２４】同上浄水機能付きシャワーヘッドにおける弁体位置切換機構の切換リング支持部材を拡大して示す正面図である。
【図２５】同上浄水機能付きシャワーヘッドにおける弁体位置切換機構の切換リング支持部材を拡大して示す上平面図である。
【図２６】同上浄水機能付きシャワーヘッドにおける弁体位置切換機構の切換リング支持部材を拡大して示す下平面図である。
【図２７】同上浄水機能付きシャワーヘッドにおける弁体位置切換機構の切換リング支持部材を拡大して示す側面断面図（図２５のＬ−Ｌ矢視図）である。
【図２８】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す平面図である。
【図２９】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す正面図である。
【図３０】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す後正面図である。
【図３１】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す縦断面図（図２８のＭ−Ｍ矢視図）である。
【図３２】同上浄水機能付きシャワーヘッドにおける仕切部材を示す上平面図である。
【図３３】同上浄水機能付きシャワーヘッドにおける仕切部材を示す側面断面図（図３２のＮ−Ｎ矢視図）である。
【図３４】同上浄水機能付きシャワーヘッドにおける仕切部材を示す下平面図である。
【図３５】同上浄水機能付きシャワーヘッドにおける集合通過部材を拡大して示す上平面図である。
【図３６】同上浄水機能付きシャワーヘッドにおける集合通過部材を拡大して示す側面断面図（図３５のＯ−Ｏ矢視図）である。
【図３７】同上浄水機能付きシャワーヘッドにおける集合通過部材を拡大して示す下平面図である。
【図３８】同上浄水機能付きシャワーヘッドにおけるシャワープレートを示す上平面図である。
【図３９】同上浄水機能付きシャワーヘッドにおけるシャワープレートを示す左側面図である。
【図４０】同上浄水機能付きシャワーヘッドにおけるシャワープレートを示す下平面図である。
【図４１】同上浄水機能付きシャワーヘッドにおけるシャワープレートを示す側面断面図（図３８のＰ−Ｐ矢視図）である。
【図４２】同上浄水機能付きシャワーヘッドにおけるストレート吐出用流路形成部材を示す上平面図である。
【図４３】同上浄水機能付きシャワーヘッドにおけるストレート吐出用流路形成部材を示す下平面図である。
【図４４】同上浄水機能付きシャワーヘッドにおけるストレート吐出用流路形成部材を示す縦断面図（図４２のＱ−Ｑ矢視図）である。
【図４５】同上浄水機能付きシャワーヘッドにおける吐出切換弁の切換レバーを示す説明図であり、（Ａ）は側面図、（Ｂ）は正面図、（Ｃ）は後正面図、（Ｄ）は上平面図、（Ｅ）は下平面図である。
【図４６】同上浄水機能付きシャワーヘッドにおける吐出切換弁の弁体を示す説明図であり、（Ａ）は側面図、（Ｂ）は正面図、（Ｃ）は後正面図、（Ｄ）は上平面図、（Ｅ）は下平面図である。
【図４７】同上浄水機能付きシャワーヘッドにおける吐出切換弁の弁体を示す側面断面図（図４６（Ｄ）のＲ−Ｒ矢視図）である。
【図４８】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す側面図である。
【図４９】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す側面断面図（図２のＢ−Ｂ矢視相当図）である。
【図５０】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す平面断面図（図４８のＡ−Ａ矢視図）である。
【図５１】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す流路切換弁の位置における横断面図（図４８のＣ−Ｃ矢視図）である。
【図５２】本発明の第２実施形態の浄水機能付きシャワーヘッドにおける浄水吐出時の状態を示す側面断面図（図２のＢ−Ｂ矢視相当図）である。
【図５３】同上浄水機能付きシャワーヘッドにおける浄水吐出時の状態を示す平面断面図（図１のＡ−Ａ矢視相当図）である。
【図５４】同上浄水機能付きシャワーヘッドにおける流路切換弁の位置で示す横断面図（図１のＣ−Ｃ矢視相当図）である。
【図５５】同上浄水機能付きシャワーヘッドの頭部を示す上平面図である。
【図５６】同上浄水機能付きシャワーヘッドの頭部を示す下平面図である。
【図５７】同上浄水機能付きシャワーヘッドの頭部を示す側面断面図（図５５のＤ−Ｄ矢視図）である。
【図５８】同上浄水機能付きシャワーヘッドの頭部を示す平面断面図（図５７のＥ−Ｅ矢視図）である。
【図５９】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す上平面図である。
【図６０】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す正面図である。
【図６１】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す側面断面図（図５９のＦ−Ｆ矢視図）である。
【図６２】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す側面断面図（図２のＢ−Ｂ矢視相当図）である。
【図６３】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す平面断面図（図１のＡ−Ａ矢視相当図）である。
【図６４】同上浄水機能付きシャワーヘッドの原水吐出時の状態における流路切換弁の位置で示す横断面図（図１のＣ−Ｃ矢視相当図）である。
【図６５】本発明の第３実施形態の浄水機能付きシャワーヘッドを示す側面図である。
【図６６】同上浄水機能付きシャワーヘッドを示す平面図である。
【図６７】同上浄水機能付きシャワーヘッドを浄水吐出時の状態で示す側面断面図（図６６のＢ−Ｂ矢視図）である。
【図６８】同上浄水機能付きシャワーヘッドを浄水吐出時の状態で示す平面断面図（図６５のＡ−Ａ矢視図）である。
【図６９】同上浄水機能付きシャワーヘッドを浄水吐出時の状態における流路切換弁の位置で示す横断面図（図６５のＣ−Ｃ矢視図）である。
【図７０】同上浄水機能付きシャワーヘッドの頭部を示す上平面図である。
【図７１】同上浄水機能付きシャワーヘッドの頭部を示す下平面図である。
【図７２】同上浄水機能付きシャワーヘッドの頭部を示す側面断面図（図７０のＤ−Ｄ矢視図）である。
【図７３】同上浄水機能付きシャワーヘッドの頭部を示す平面断面図（図７２のＥ−Ｅ矢視図）である。
【図７４】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す平面図である。
【図７５】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す正面図である。
【図７６】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す側面断面図（図７４のＦ−Ｆ矢視図）である。
【図７７】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す平面断面図（図７６のＧ−Ｇ矢視図）である。
【図７８】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す縦断面図（図７４のＨ−Ｈ矢視図）である。
【図７９】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す側面図である。
【図８０】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す平面図である。
【図８１】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す側面断面図（図８０のＢ−Ｂ矢視図）である。
【図８２】同上浄水機能付きシャワーヘッドを原水吐出時の状態で示す平面断面図（図７９のＡ−Ａ矢視図）である。
【図８３】同上浄水機能付きシャワーヘッドの原水吐出時の状態における流路切換弁の位置で示す横断面図（図７９のＣ−Ｃ矢視図）である。
【図８４】本発明の第４実施形態の浄水機能付きシャワーヘッドにおける浄水吐出時の状態を示す側面断面図（図６６のＢ−Ｂ矢視相当図）である。
【図８５】同上浄水機能付きシャワーヘッドにおける浄水吐出時の状態を示す平面断面図（図６５のＡ−Ａ矢視相当図）である。
【図８６】同上浄水機能付きシャワーヘッドにおける浄水吐出時の状態を流路切換弁の位置で示す横断面図（図６５のＣ−Ｃ矢視相当図）である。
【図８７】同上浄水機能付きシャワーヘッドの頭部を示す上平面図である。
【図８８】同上浄水機能付きシャワーヘッドの頭部を示す下平面図である。
【図８９】同上浄水機能付きシャワーヘッドの頭部を示す後正面図である。
【図９０】同上浄水機能付きシャワーヘッドの頭部を示す側面断面図（図８７のＤ−Ｄ矢視図）である。
【図９１】同上浄水機能付きシャワーヘッドの頭部を示す平面断面図（図９０のＥ−Ｅ矢視図）である。
【図９２】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す平面図である。
【図９３】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す正面図である。
【図９４】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す側面断面図（図９２のＦ−Ｆ矢視図）である。
【図９５】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す平面断面図（図９４のＧ−Ｇ矢視図）である。
【図９６】同上浄水機能付きシャワーヘッドにおける混合水栓接続側の把持部を示す横断面図（図９２のＨ−Ｈ矢視図）である。
【図９７】同上浄水機能付きシャワーヘッドの原水吐出時の状態で示す側面断面図（図６６のＢ−Ｂ矢視相当図）である。
【図９８】同上浄水機能付きシャワーヘッドの原水吐出時の状態で示す平面断面図（図６５のＡ−Ａ矢視相当図）である。
【図９９】同上浄水機能付きシャワーヘッドの原水吐出時の状態における流路切換弁の位置で示す横断面図（図６５のＣ−Ｃ矢視相当図）である。
【符号の説明】
１００，２００，３００，４００浄水機能付きシャワーヘッド
１１０，２１０，３１０，４１０把持部
１１１，１１２，２１１，２１２，３１１，３１２，４１１，４１２筒部
１１１ａ，２１１ａ，３１１ａ，４１１ａ流路切換弁組込部
１１１ｃ，２１１ｃ隔壁
１１１ｄ，１１１ｅ開口
１１２ａ，４１１ｂリブ
１１２ｂ，２１２ｂ端面
１１３，２１３，３１３，４１３中継部
１１３ａ，２１３ａ，３１３ａ，４１３ａ円筒部外面
１１３ｂ，２１３ｂ，３１３ｂ，４１３ｂ雄ねじ
１１３ｃ，２１３ｃ，３１３ｃ，４１３ｃ雌ねじ
１１３ｄ，２１３ｄ，３１３ｄ，４１３ｄ円筒部内面
１１４，２１４，３１４，４１４ホース接続部
１１４ａ，２１４ａ，３１４ａ，４１４ａ突起部
１１５，２１５，３１５，３１５ホース取付ねじ
１１６，２１６，２１７，３１６，３１７，４１７カートリッジ受け
１１６ａ，２１６ａ，３１６ａ（外周側の）流路
１１６ｂ，２１６ｂ，３１６ｂ（内面側の）流路
１２０，２２０，３２０，４２０頭部
１２０ａ，２２０ａ，３２０ａ，４２０ａ空間（空洞）
１２０ｂ，２２０ｂ，３２０ｂ，４２０ｂ頭部外皮
１２０ｃ，２２０ｃ，３２０ｃ，４２０ｃシャワー吐出面上流側空間（または吐出切換弁収容空間）
１２１，２２１，３２１，４２１シャワープレート
１２２，２２２，３２２，４２２ストレート吐出口
１２３，２２３，３２３，４２３シャワー吐出口
１２４軸孔
１２５，２２５，３２５，４２５仕切部材
１２６，２２６，３２６，４２６集合通過部材
１２７，２２７，３２７，４２７ストレート吐出用流路形成部材
１２７ａ，２２７ａ，３２７ａ，４２７ａ開口
１２７ｂ，２２７ｂ，３２７ｂ，４２７ｂストレート吐出流路
１３０，２３０，３３０，４３０水質浄化用カートリッジ
１３０ａ，１３０ｂ，２３０ａ，２３０ｂ，３３０ａ，３３０ｂ，４３０ｂ端部用キャップ
１３１，２３１，３３１，４３１外周側流路
１３２，２３２，３３２，４３２中央空間部
１３３，２３３，３３３，４３３水質浄化材
１３４，３３４，２３５，４３５フィルタ
１４０，２４０，３４０，４４０流路切換弁
１４１，２４１，３４１，４４１押しボタン
１４１ａ案内溝
１４１ｂ係合部
１４１ｃ凹部
１４２，２４２，３４２，４４２弁座
１４２ａ，３４２ａ，３４２ｃ，４４２ａ，４４２ｃ開口
１４２ｂ，２４２ｂ，３４２ｂ，４４２ｂ係止部
１４３，２４３，３４３，４４３弁体
１４３ａ本体
１４３ｂＯリング溝
１４３ｃＹリング溝
１４３ｄ凹部
１４３ｅ円柱状突出部
１４３ｆ円柱状突出部
１４３ｇ凹部
１４３ｈ係止アーム
１４３ｉ係止部
１４３ｊ，１４３ｋ座
１４３ｍ，１４３ｎリブ
１４４，２４４，３４４，４４４コイルスプリング
１４５，２４５，３４５，４４５弁体位置切換機構
１４５ａ第１切換こま
１４５ｂ第２切換こま
１４５ｃ切換リング
１４５ｄ切換リング支持部材
１４６Ｏリング
１４７Ｙリング（またはＵリング）
１５０，２５０，３５０，４５０吐出切換弁
１５０ａ，２５０ａ，３５０ａ，４５０ａ弁体
１５０ｂ皿部
１５０ｃアーム部
１５０ｄ嵌合孔
１５０ｅ軸結合部
１５１，２５１，３５１，４５１切換レバー
１５１ａ弁軸
１５１ｂレバー部
１５１ｃ指掛け部
１５１ｄ凹部
１５１ｅ弾性係止部
２１７ａ，３１７ａ，４１７ａ（外周側の）流路
２１７ｂ，３１７ｂ，４１７ｂ（内面側の）流路
２１８，２１９，３１２ｃ，４１２ｄ流路[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shower head with a water purifying function which is used in a kitchen or kitchen, a washroom or a bathroom, and which has the ability to purify water and / or hot water discharged during use.
[0002]
[Prior art]
Conventionally, a shower head attached to a wash apparatus or a shower apparatus used in a washroom or a bathroom, etc., and having a water purification capability of water, hot water, or hot / cold mixed water (hereinafter simply referred to as mixed water) includes, for example, There was a shower head described in JP-A-9-299832.
In this shower head, a water purifying member is provided in the gripping part, and a flow path switching member is provided at a position close to the head main body of the gripping part so that the flow path can be switched with one hand. Select either one of the flow path with the member or the flow path without the water purification member, and flow the water supplied to the selected flow path so that either purified water or raw water can be discharged. ing.
And in the selection of this flow path, a fixing member having a plurality of openings is inserted into the lower end portion (the gripping portion upper end portion) of the head body, and a plurality of openings formed at the same interval as the opening opening interval of the fixing member are inserted. A switching cylindrical portion having a cutout portion is provided so as to be rotatable relative to the fixed member, and the operation knob fixed to the switching cylindrical portion is operated with a finger so that the cutout portion of the switching cylindrical portion is The flow path is selected depending on which opening at the opening position of the fixing member is matched.
[0003]
〔problem〕
In a conventional shower head that switches between purified water and raw water with one hand, the operation knob fixed to the switching cylinder is operated with a finger so that the notch of the switching cylinder can be opened at any opening position of the fixing member. Since the flow path is selected depending on whether the flow path is selected, a complicated-shaped flow path switching member is required, and operation is also necessary because the finger must be swung in the circumferential direction of the gripping portion. It is bad, and you have to use unnatural power.
For this reason, a shower head having a flow path switching mechanism with better operability, a simple member shape, and a simple flow path switching structure has been desired.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above-mentioned problems in the prior art, and the problem specifically set in order to solve this problem is good operability, and switching of the flow path between raw water and purified water is possible. It is an object to provide a shower head with a water purification function that is easy, has a simple member shape, has a simple channel switching mechanism, and is easy to handle and easy to manufacture.
[0005]
[Means for Solving the Problems]
The present invention as means configured to effectively solve the above problems In charge The shower head with a water purifying function is formed integrally with a head having a shower discharge port and a gripping part for accommodating the water purification cartridge in a replaceable manner, and upstream or downstream of the water purification cartridge housing part of the gripping part. A flow path switching valve for switching between purified water and raw water is provided on the side, and this flow path switching valve is formed as a parallel movement type shutoff valve provided with a valve body that moves in a direction crossing the central axis of the gripping portion. A push button type operation portion of the flow path switching valve is disposed outside the position of the path switching valve so that the flow path switching valve can be operated from the outside, and further, the flow path is disposed upstream of the discharge port of the head. A discharge switching valve that functions independently of the path switching valve to switch between shower discharge and straight discharge is provided, and this discharge switching valve is formed as a shut-off valve in which the valve element moves in the direction crossing the valve seat flow path vomit It is characterized in that it has formed operably from outside the discharge switching valve disposed external to the operation of the discharge switching valve valve position near.
[0006]
Also, The present invention The shower head with a water purification function according to the present invention includes a cylindrical valve seat in which the flow path switching valve is fixed to the grip portion, and a valve that is fitted in the valve seat and moves in the axial direction of the cylindrical valve seat. It is characterized in that either one of the raw water and the purified water is formed as a flow path passing through the inside of the valve seat.
Also, The present invention The shower head with a water purification function according to the present invention is characterized in that the water purification cartridge is provided with a filter on the outer peripheral surface to form a purification flow path that passes from the outer peripheral surface side to the inner surface side.
Also, The present invention The shower head with a water purification function according to the present invention is characterized in that the water purification cartridge is provided with a filter on the inner surface to form a purification flow path that passes from the inner surface side to the outer peripheral surface side.
Also, The present invention The shower head with a water purifying function according to the present invention is characterized in that the discharge switching valve is formed as a rotary shut-off valve that rotates the valve body about an axis parallel to the valve seat flow path.
Also, The present invention In the shower head with a water purifying function according to the present invention, the plate surface of the valve body is oriented substantially perpendicular to the valve shaft of the discharge switching valve, and the plate surface is arranged at a position spaced from the valve shaft via an arm portion. The valve body is formed as a rotary shut-off valve that rotates around the valve shaft.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the following embodiments of the present invention, a case where a flow path switching valve having a push button protruding from the outer surface of the gripping portion is provided will be specifically described.
This embodiment is specifically described for better understanding of the gist of the invention, and does not limit the content of the invention unless otherwise specified.
[0008]
[First Embodiment]
〔Constitution〕
The shower head with a water purification function used here is usually connected directly to the mixing faucet or indirectly through a hose at the kitchen sink, and is used after purifying the mixed water by operating the push button type operation unit. The flow path switching valve that can be formed is formed as a shower head provided in the grip portion.
For this reason, as shown in the external view of FIGS. 1 and 2, the shower head 100 with a water purifying function includes a gripping part 110 having an end that can be attached to a not-shown mixing faucet or a hose provided in the mixing faucet, A head 120 capable of shower discharge is provided at the end of the grip 110 opposite to the mixing faucet connection side.
[0009]
The gripping part 110 is divided into an intermediate part between a cylindrical part 111 directly connected to the head part 120 and a cylindrical part 112 on the mixing faucet connection side, and both cylindrical parts 111 and 112 are detachably and integrally combined with this intermediate part. The relay portion 113 is formed with a screw coupling portion that allows the water to be purified, and the screw portion of the relay portion 113 is released to separate the tube portion 111 and the tube portion 112, thereby purifying water inside the grip portion 110. Cartridge 130 (see FIGS. 3 and 4) can be accommodated, and a thick-walled cylindrical hose connection 114 is provided at the end of the mixing faucet connection side, and a hose mounting screw is provided at the tip thereof. 115 is formed to facilitate attachment and detachment with the hose.
In addition, a push button 141 that is an operation end of the flow path switching valve 140 (see FIGS. 4 and 5) is projected from the outer peripheral surface of the gripping portion 110 to the end portion of the gripping portion 110 that is closest to the head. It forms so that the flow-path switching valve 140 can be operated.
[0010]
As shown in FIGS. 3 to 5, the head 120 is a cavity in which the top part is formed in a curved surface, the main part is formed in a substantially cylindrical shape, and no special protruding part is provided therein. A space (cavity) 120a in which the mixed water flowing in from 110 is retained is formed by the head skin 120b, and a shower plate 121 having a discharge surface for uniformly discharging the mixed water is detachably formed. A straight discharge port 122 is provided at the center of the tube, a shower discharge port 123 is provided so as to surround the periphery, a discharge switching valve 150 for switching between straight discharge and shower discharge is provided, and an operation portion of the discharge switching valve 150 is provided. The switching lever 151 is arranged so as to protrude outside the shower plate 121.
[0011]
As shown in FIGS. 3 to 5, the shower head 100 with the water purification function that accommodates the water purification cartridge uses the outer peripheral flow path 131 of the water purification cartridge 130 as a part of the raw water flow path. The central space 132 is used as a part of the purified water flow path.
The water purification cartridge 130 in this case includes a water purification material 133 mainly composed of activated carbon formed in a cylindrical shape by providing a long through hole (central space portion 132) concentrically with the central axis in the axial direction, and an outer periphery thereof. An end cap 130a, 130b for concentrically fitting and fixing in the gripping portion is attached to each end of a filter 134 made of non-woven fabric, sponge or net on the surface.
[0012]
The cylindrical part 111 located on the head side of the grip part 110 has a cylindrical shape coaxial with the cylindrical part 111 into which the end cap 130a on the downstream side (head side) of the water purification cartridge 130 is inserted and fixed. A cartridge receiver 116 is protruded, and a flow path switching valve 140 is built in on the downstream side of the cartridge receiver 116, and the push button 141 of the flow path switching valve 140 is protruded from the upper outer peripheral surface of the cylindrical portion 111 so as to be able to enter and exit.
Further, the cylindrical portion 112 located on the hose connection side of the grip portion 110 has a plurality of ribs 112a for restraining the end cap 130b on the upstream side (hose connection side) of the water purification cartridge 130 from the outer peripheral side. , 112a.
[0013]
As a result, the insertion end of the end cap 130a on the downstream side of the water purification cartridge 130 is inserted into the cartridge receiver 116 provided inside the cylindrical portion 111, and the relay portion 113 is screwed together. When the portion 112 is integrally coupled, the end portion of the upstream end cap 130b of the water purification cartridge 130 is sandwiched by the ribs 112a,..., 112a, and the water purification cartridge 130 is centered and fixed in position. Thus, the water purification cartridge 130 can be accommodated in the grip portion 110 substantially coaxially.
[0014]
The space 120a and the shower discharge surface upstream space (discharge switching valve storage space) 120c are partitioned downstream of the space 120a formed inside the head 120 and upstream of the discharge switching valve storage space. A partition member 125 is provided, and a collective passage member 126 is provided at the center of the partition member 125.
The discharge switching valve 150 provided on the downstream side of the partition member 125 is disposed so that the tip of the valve body 150 a can be positioned directly below the collect passage member 126.
On the further downstream side of the position where the collective passage member 126 and the valve body 150a of the discharge switching valve 150 are arranged vertically, the straight discharge flow path forming member 127 communicating with the straight discharge port 122 formed in the shower plate 121 is provided. Is set up.
[0015]
In the discharge switching valve 150, the valve body 150 a is arranged immediately downstream with a slight gap from the collective passage member 126, and the lower surface of the valve body 150 a is an opening 127 a formed at the upper end of the straight discharge flow path forming member 127. It is arranged at the nearest position where it can come into contact with the cover, so that it can be covered from the top as a lid of the straight discharge flow path forming member 127, and the valve body 150a is directly above the opening 127a by the operation of the switching lever 151. Of the switching lever 151 so that the valve body 150a can freely rotate in and out of the upper end of the straight discharge flow path forming member 127 in a range from the position of the valve body 150a to the position where the entire valve body 150a is disengaged from the position of the opening 127a. When the angle is set and the entire valve body 150a is out of the position of the opening 127a, all of the mixed water flowing out of the collecting passage member 126 is opened in the opening 12. It formed so as to flow from a straight discharge passage 127b.
[0016]
As shown in FIG. 6, the head portion 120 integrally formed with the cylinder portion 111 is provided with a flow path switching valve built-in portion 111 a opened on the upper peripheral surface of the cylinder portion 111, and the cylinder formed inside A substantially cylindrical valve body 143 is fitted in the valve seat 142, and a coil spring 144 that urges the valve body 143 in the axial direction is interposed between the valve body 143 and the lower inner surface of the cylindrical portion 111. Between the valve body 143 and the push button 141 as the operating member, a valve body position comprising four parts, a first switching top 145a, a second switching top 145b, a switching ring 145c and a switching ring support member 145d. A switching mechanism 145 is interposed. The valve body 143 is fitted with an O-ring 146 at the tip in the axial direction, and a Y-ring (or U-ring) 147 is fitted at the base in the axial direction. Measures against leakage between the seat 142 and the valve body 143 are taken.
[0017]
As shown in FIGS. 7 to 12, the head portion 120 integrally protrudes the cylindrical portion 111 toward the gripping portion, and a cylindrical portion outer surface 113 a for fitting with the cylindrical portion 112 and a male screw are provided at the distal end portion of the cylindrical portion 111. 113b is formed on the outer surface side, and further, an O-ring groove 113f for fitting an O-ring (see FIG. 3) necessary for preventing leakage at the time of screwing is formed on the axial base of the cylindrical outer surface 113a. The male part of the relay part 113 is screwed with the cylinder part 112.
A cylindrical cartridge receiver 116 into which an end cap 130a on the downstream side of the water purification cartridge 130 can be fitted is partitioned between the upstream side and the downstream side of the cylindrical portion 111 on the inner surface side of the relay portion forming portion. The partition wall 111c is coaxially supported and arranged on the upstream surface of the partition wall 111c.
Further, on the downstream side of the partition wall 111c, a flow path switching valve built-in portion 111a for incorporating the flow path switching valve 140 and a cylindrical valve seat 142 formed for fitting the valve body are formed, and the flow on the outer periphery side of the cartridge receiver is formed. A flow path 117 that communicates between the lower portion of the path 116a and the valve seat 142 is formed by erecting a rectangular tubular flow path forming member 118 that connects the lower ends of the cartridge receiver 116 and the valve seat 142. To do.
[0018]
The valve seat 142 is formed in a cylindrical shape, has an inner diameter larger than the outer diameter of the valve body so that the valve body 143 can be fitted from the upper end, and has a reduced diameter so that the valve body does not pass through the lower end portion. It has an inner surface formed with a diameter portion, and has a shape opposite to the locking portion of the switching ring support member 145d at two equal circumferential intervals on the outer peripheral edge of the upper end to lock the switching ring support member 145d. The engaging portions 142b and 142b are formed, and an opening 142a communicating with the flow channel 117 of the flow channel forming member 118 is formed in the lower end portion of the peripheral surface.
The flow path forming member 118 has an opening 142a that penetrates the side surface of the valve seat 142 at the upper end portion, and an opening 111d that penetrates the partition wall 111c and communicates with the flow channel 116a on the outer peripheral side of the cartridge receiver 116 at the lower end portion. It is drilled to form a flow path from the flow path 116 a on the outer peripheral side of the cartridge receiver 116 to the inside of the valve seat 142.
[0019]
In the partition wall 111 c, openings 111 e and 111 e communicating with the flow path 116 b inside the cartridge receiver 116 are formed outside the both side surfaces of the flow path forming member 118, and the valve body 143 is fitted in the valve seat 142. When the flow path switching valve 140 is closed by closing the flow path in the valve, the flow path 117 is closed so that the purified water can flow into the space 120a of the head 120 through the openings 111e and 111e. . On the other hand, when the valve body 143 opens the flow path in the valve and opens the flow path switching valve 140, the opening 111d, the flow path 117, and the opening from the outer peripheral flow path of the water purification cartridge 130 are opened. 142a is opened, and raw water can pass through the inside of the valve seat 142 through these and flow out into the space 120a of the head 120.
The flow path switching valve built-in portion 111a and the valve seat 142 in which the flow path switching valve 140 is incorporated have a central axis as the same central axis, and the same central axis is directed in a crossing direction with respect to the central axis of the grip portion 110. The moving direction of the valve body 143 that moves within the valve seat can be moved in a direction intersecting the central axis of the gripping part 110.
[0020]
The flow path switching valve built-in portion 111a opens to the upper outer surface side of the cylindrical portion 111, is attached to the lower end with a coil spring 144 as an urging member, and a valve body 143 fitted with an O-ring 146 and a Y-ring 147 is a valve seat 142. The valve body position switching mechanism 145 is attached to the upper end of the valve body 143, and the push button 141 is attached to the upper part of the valve body position switching mechanism 145 so that the pressing surface is directed upward. The push button 141 of the valve 140 can be pressed from the outside of the grip portion 110.
[0021]
As shown in FIGS. 13 to 15, the push button 141 forms a thin member having an outer shape that forms a shallow prism with rounded corners and a truncated pyramid formed on the top, A concave portion 141c serving as a seat with which the end surface of the cylindrical portion of the second switching top 145b abuts is formed in the central portion of the second switching top 145b, and the guide for guiding the switching ring support member 145d to each central portion of the opposite sides of the inner surface of the peripheral portion. Grooves 141a and 141a are formed, and the inner surfaces of the other opposite sides are formed in the opposite direction to the locking portion 143i (see FIGS. 16 to 20) formed on the upper portion of the valve body 143, and the engagement of the valve body 143 is performed. Engaging portions 141b and 141b with which the stopping portions 143i are engaged are formed.
The guide grooves 141a and 141a and the engaging portions 141b and 141b are formed with a minimum width so that the engaging ends of the mating parts do not shift laterally, and the engaging positions are formed in the recesses.
[0022]
As shown in FIGS. 16 to 20, the valve body 143 has an O-ring groove 143b on the distal end side and a Y-ring groove 143c on the base (upper end) side on the outer peripheral portion of the main body 143a formed in a substantially cylindrical shape. A concave portion 143d for inserting one end side of the coil spring 144 is formed deeply on the end surface on the lower end side of the main body 143a so as to be deeply formed at the center portion, and a thin circle is formed on the end surface on the upper end side of the main body 143a in the center portion. A columnar protrusion 143f is provided to form a shallow recess 143g.
Locking arms 143h that protrude in the axial direction from the upper end surface of the main body 143a and bend at a right angle protrude from the upper end of the body 143a at four equally spaced intervals, and each of the two locking arms 143h is paired and directed at the tip in the same direction. , And 143i are formed at the distal end of the locking arm 143h that is formed so that the other pair of hooks facing in opposite directions have elasticity so that they can be moved close to and away from each other.
[0023]
Four deep seats 143j,..., And 143j that contact the end of the coil spring 144 at the innermost part are provided in the deep recess 143d provided on the lower end surface of the main body 143a at regular intervals from the inner peripheral surface. , 143j are formed so that the end faces thereof are the same. A shallow recess 143g provided on the upper end surface of the main body 143a is provided with a seat 143k that protrudes in a disk shape from the bottom surface and contacts the end surface of the first switching top 145a, and a thin circle is formed from the center of the seat 143k. The columnar protrusion 143f protrudes.
Each locking arm 143h is formed in a shape that protrudes in the axial direction from the end surface on the upper end side of the main body 143a and is bent at a right angle, and is a bracket that is bent at a right angle from a column portion that protrudes in the axial direction from the end surface. Reinforcing ribs 143m and 143n are provided in the portion to enhance the bending strength.
[0024]
As shown in FIG. 6, the valve body position switching mechanism 145 provided between the push button 141 and the valve body 143 includes a first switching top 145a, a second switching top 145b, a switching ring 145c, and a switching ring support member 145d. It consists of four parts, and among these, the first switching top 145a, the second switching top 145b, and the switching ring 145c constitute a cam mechanism for changing the moving distance of the valve body 143, and these three parts are placed at predetermined positions. A predetermined function can be exhibited by fitting and combining, and the switching ring support member 145d is engaged with the upper end portion of the valve seat 142 and fixed in position, thereby forming a first switching mechanism constituting a cam mechanism. The position of each of the top 145a, the second switching top 145b, and the switching ring 145c is defined so that a predetermined movement can be performed and the intended function can be achieved. Kill so.
[0025]
21A,..., (E), the first switching top 145a is a thin rod-shaped fitting shaft that is inserted into the fitting hole of the second switching top 145b from the end surface on one end side of the top main body 161. The plate-like ribs 163, 163, and 163 that protrude to the outer peripheral side of the end of the top body 161 are erected at equal intervals on the circumference at the base portion where the 162 protrudes coaxially and the fitting shaft 162 protrudes. An inclined surface inclined in the same direction as the inclined surface provided on the end surface of the switching ring 145c on the switching shaft side is formed at the end portion of each rib 163 located on the switching ring 145c side. Further, a fitting hole 164 for fitting a columnar protruding portion 143f provided in the valve body 143 is formed in an end portion of the top body 161 opposite to the fitting shaft protruding side.
[0026]
As shown in FIGS. 22A, 22D, the second switching top 145b is formed with a main body 166 as a cylindrical member, and the fitting shaft 162 of the first switching top 145a can be inserted into the center portion. Thus, one end is formed with an end surface that abuts against the recess 141c (see FIG. 13) of the push button 141, and the other end (the end located on the first switching top side) has six ribs at equal intervals on the circumference. The tip of each rib 167 that contacts the inclined surface of the rib 163 provided on the first switching top 145a is formed in a mountain shape at the end of the rib standing side, and the middle of each rib 167 is a valley. The end face is formed into a shape, and the ribs 163, 163, and 163 of the first switching top 145a that are in contact with the end face on which the unevenness is formed move to the valley side along the inclined surface to thereby perform the first switching. The top 145a rotates in a certain direction.
[0027]
As shown in FIGS. 23A,..., (E), the switching ring 145c is provided with a groove 172 having a cross-sectional shape such as a spline groove formed on the inner diameter side of the cylindrical portion 171 and on the outer peripheral side of the cylindrical portion 171. A guide plate 174, 174 is provided between the two locking arms 143h provided with a flange 173 and provided on the valve body 143 and protruding locking ends 143i, 143i in opposite directions. Claw portions 175 and 175 that project at two intervals and engage with the opening 179a (see FIG. 27) of the switching ring support member 145d are projected at positions displaced by 90 degrees with respect to the guide plates 174 and 174.
The cylindrical portion 171 with the groove 172 formed on the inner diameter side projects in a cylindrical shape on one side with respect to the flange portion 173, and on the other side in an axial direction in which an inclined surface inclined in the same direction is formed on the end surface. A first switching block that protrudes in the form of a three-part cut cylindrical shape in which shallow grooves 172a and deep grooves 172b in the axial direction reaching the flanges 173 are alternately provided and abuts the inclined surface of the shallow grooves 172a in the axial direction. It moves in the axial direction according to the inclined surface formed on the ribs 163, 163, 163 of 145a, and enters either the shallow groove 172a in the axial direction or the deep groove 172b in the axial direction by the inclined surface at the contact position. .
On the side where the deep groove 172b is formed in the axial direction, a position-regulating step 172c is provided on the inner side of the cylindrical portion 171 so that the rib 163 provided at the tip of the first switching top 145a to be engaged comes into contact with. The stroke of the first switching top 145a is defined and the passage of the first switching top 145a is prevented.
[0028]
24 to 27, the switching ring support member 145d is formed in a ring shape provided with a hole of a size into which the portion of the switching ring 145c that is divided into three and formed into a notched cylindrical shape can be inserted into the main body 176. The locking portions 177 and 177 formed in a hook shape to be locked to the locking portions 142b and 142b formed on the outer periphery of the upper end portion of the valve seat 142 are disposed outside the ring-shaped main body 176 so as to face each other. The locking arms 178 and 178 provided at the distal end are extended, and at a position displaced by 90 degrees from the extended position of the locking arms 178 and 178, a switching ring 145c is formed on the opposite side to the formation side of the locking portions 177 and 177. The support members 179 and 179 protrude.
Each support member 179 forms a curved surface along the outer periphery of the main body 176, and an opening 179a in which the claw portion 175 of the switching ring 145c is locked is provided at the center of the coupling position of the support member 179 with the main body 176. An inclined surface 179b whose thickness decreases toward the tip side is formed on the tip side from 179a.
Further, a reinforcing rib 178a is provided at the bent portion of each locking arm 178 toward the locking portion forming side to restrict the bending, thereby preventing cracks due to stress concentration on the inner surface side of the corner portion during engagement.
[0029]
The tube portion 112 on the hose connection side formed so as to be separable from the tube portion 111 integrated with the head portion 120 via the relay portion 113 is substantially cylindrical as shown in FIGS. A thick cylindrical hose connection portion 114 is projected outwardly from the end surface, a hose attachment screw 115 is formed at the tip thereof, and a hose connection portion 114 is formed. A female screw 113c and a cylindrical inner surface 113d for fitting into the cylindrical outer surface 113a of the cylindrical portion 111 are formed on the inner surface side at the end located on the opposite side of the end provided with the female portion of the relay portion 113. Forming side.
[0030]
On the inner surface side of the cylinder portion 112, a plurality of inner end dimensions are formed on the upstream end portion and the end surface 112b in accordance with the end edge portion of the end cap 130b on the hose connection side of the water purification cartridge 130. The ribs 112a,..., 112a protrude, and the edge of the end cap 130b is clamped when the water purification cartridge 130 is accommodated so that the water purification cartridge 130 can be concentrically fixed. The guide and swirl member when mixed water flows from the hose connection side are used.
Further, a protruding portion 114a that serves as a positioning rib when fitted and supported in the holder portion of the faucet body protrudes on the outer peripheral side of the hose connecting portion 114.
[0031]
As shown in FIGS. 32 to 34, the partition member 125 incorporated in the head 120 is formed by projecting short cylindrical annular members 125 b and 125 c on the outer peripheral edge of each surface side of the disk-shaped partition plate 125 a. A fitting hole 125d for fitting the collective passage member 126 (see FIG. 36) for shifting to the entrance to the shower discharge side or the straight discharge side is formed in the center of the partition plate 125a. The annular member 125c on the lower side of the outer periphery is formed with a multi-threaded male screw 125e having two threads on the outer peripheral surface so that the shower plate 121 can be screwed, and an O-ring groove 125f is formed above the screw forming portion. It can be formed to prevent leakage.
The fitting hole 125d is divided into two stages, the upper part is formed with a circular hole having the same diameter with respect to the axial direction of the circle, and the lower part is formed with a hole whose diameter is reduced downward in the axial direction. In the middle of them, a step is provided so that the assembly passage member 126 can be fitted from above.
[0032]
As shown in FIGS. 35 to 37, the collective passage member 126 is formed by cutting an annular groove 126 b shallowly on the heel side into a cylindrical portion 126 a of a rounded cylindrical shape having a flat shape with an outer edge by cutting the end surface on the heel side shallowly. A large number of light beams 126c are formed on the outer periphery of the annular groove 126b so that the outer end portion reaches the flange portion 126d. The outer diameter of the cylindrical portion 126a provided with the groove 126b is made smaller than the outer diameter of the flange portion 126d, and the outer lower end portion of the light rod 126c is formed in a shape opened to the side.
The collective passage member 126 has an outer diameter that allows the cylindrical portion 126a and the flange portion 126d to be fitted into the fitting holes 125d of the partition member 125 (see FIG. 33), and is formed on the side surface of the cylindrical portion 126a. Is adjusted in the axial direction so as to reach the position of the hole formed in the fitting hole 125d of the partition member 125 to be reduced in diameter, and the raw water or purified water flowing out from the opening radially outward is reduced in diameter. It is made to flow out so that it may be concentrated below a center part by the hole made.
[0033]
As shown in FIGS. 38 to 41, the shower plate 121 as a discharge surface forming member located on the downstream side of the partition member 125 is formed by raising a flat disk portion 121a and its outer peripheral edge 121b. And a straight discharge port 122 is formed in the central portion of the disc portion 121a, and a valve shaft 151a (see FIG. 45) of the discharge switching valve 150 is passed through the shaft portion 151a adjacent to the straight discharge port 122 to support the shaft. A plurality of small holes to be the shower discharge ports 123 are formed at substantially equal intervals around the straight discharge ports 122 on the surface excluding the straight discharge ports 122 and the shaft holes 124.
In this shower plate 121, the protruding portion forming side of the disc portion 121a in which each hole is formed is the inflow side (upstream side) of the mixed water, and the number of strips is two on the inner peripheral surface side of the protruding portion 121b. The multi-thread female screw 121c is formed so that it can be screwed into the multi-thread male thread 125e provided on the partition member 125.
Further, a stepped portion 121d having an enlarged diameter is provided inside the upper end portion of the overhang portion 121b to form a pressing surface that covers the O-ring groove, and an O-ring attached to the O-ring groove 125f of the partition member 125 (FIG. 3). Reference) is pressed from the outside so that leakage can be prevented when screwing with the partition member 125.
[0034]
Further, a concave portion 121e into which the straight discharge flow path forming member 127 (see FIG. 44) is fitted is provided at the upper part of the straight discharge port 122, and the straight discharge flow path forming member 127 is erected at the center of the shower plate. Thus, the flow path on the straight discharge side (straight discharge flow path 127b) and the flow path on the shower discharge side (shower discharge surface upstream space 120c) can be partitioned.
Furthermore, on the outer peripheral surface of the overhanging portion 121b, two projecting portions 121f and 121f are provided on the outer peripheral side of the position where the shaft hole 124 is provided so as to sandwich the outer peripheral surface of the shaft hole drilling position. When the valve shaft 151a of the switching valve 150 is pivotally supported through the shaft hole 124 and the switching lever 151 is provided between the two protrusions 121f and 121f, the operating range of the switching lever 151 is reduced to the two protrusions 121f. , 121f can be regulated to a given rotation angle.
[0035]
As shown in FIGS. 42 to 44, the straight discharge flow path forming member 127 erected at the center portion of the shower plate is formed in a cylindrical shape having an end portion whose diameter is reduced on the inner surface side. The inside is used as the straight discharge flow path 127b.
An opening diameter of the opening 127a formed at the upper end is formed so as to be smaller than the inner diameter of the cylindrical portion, so that the dish 150b (see FIG. 46) formed on the valve body 150a of the discharge switching valve 150 can be easily placed. To do. Further, the outer diameter of the lower end is large enough to fit on the inner diameter side of the recess 121e formed at the center of the shower plate 121, and fits so that it can stand upright at the center of the shower plate 121 after fitting. Form so that the state is tight.
[0036]
As shown in FIG. 3, the discharge switching valve 150 includes a switching lever 151 that is integrally provided with a valve shaft 151 a that is rotatably supported around an axis that passes through the disc portion 121 a of the shower plate 121, and a collective passage member. 126 and the valve body 150a formed in a thin dish shape having an upper surface formed in a shallow concave surface so that it can be disposed in a gap provided between the straight discharge flow path forming member 127 and the like.
[0037]
As shown in FIG. 45, the switching lever 151 has a lever portion 151b extending in a direction perpendicular to the valve shaft 151a, and is substantially perpendicular to the lever rotation direction at the tip of the lever portion 151b which is an operation piece. Recesses 151d are formed on both sides of the finger-hanging portion 151c that forms a smooth surface to facilitate finger engagement. The distal end of the valve shaft 151a is inserted into a fitting hole 150d (see FIG. 46) formed on the valve body side to be coupled to the valve body 150a, and is urged to the expansion side to prevent disconnection after the coupling. The elastic locking portions 151e and 151e having a rectangular cross section are projected.
[0038]
As shown in FIGS. 46 and 47, the valve body 150a is formed in a thin dish shape with the upper surface formed in a shallow concave surface, and the dish portion 150b formed in a convex surface curved with a radius of curvature with the lower surface lengthened by the plate thickness, An arm portion 150c extending in one direction from the plate portion 150b and a fitting hole 150d having a rectangular cross section into which the valve shaft side elastic locking portions 151e and 151e are inserted and fitted into the distal end portion of the arm portion 150c are formed. The shaft coupling portion 150e is provided.
When the elastic locking portions 151e and 151e on the valve shaft 151a side are inserted into the fitting holes 150d of the shaft coupling portion 150e, the elastic locking portions 151e from the outside (downstream side) to the shaft holes 124 formed in the shower plate 121. 151e, the valve shaft 151a is fitted into the shaft hole 124, and then the elastic locking portions 151e, 151e are inserted into the fitting hole 150d on the valve body 150a side until it can be prevented from being removed. The body 150a and the switching lever 151 are assembled to the shower plate 121, and the discharge switching valve 150 is integrally coupled.
[0039]
[Function and effect]
In the first embodiment configured as described above, it is possible to easily switch between purified water and raw water by pressing the push button 141 of the flow path switching valve 140 with a finger, and independent of switching between purified water and raw water. In addition, the straight discharge and the shower discharge can be switched by rotating the switching lever 151 of the discharge switching valve 150.
[0040]
When the push button 141 of the flow path switching valve 140 is pressed and pushed down to the purified water discharge position (FIGS. 3 to 5), the flow path switching valve 140 is closed, and the cartridge receiving outer surface side of the flow path switching valve 140 is closed. The channel that communicates with the channel 116 a formed in the closed state is closed, and the mixed water that has flowed into the grip portion 110 passes the filter 134 and the water purification material 133 from the outer channel 131 of the water purification cartridge 130. While passing through and purifying the water quality, it flows out into the central space 132 of the water purification material 133, flows out into the space 120 a formed in the head 120 through the channel 116 b on the inner surface side of the cartridge receiver 116, and discharge switching According to the selection of the valve 150, it passes through the collective passage member 126 from the space 120 a and goes outside the shower plate 121 from the straight discharge port 122 or the shower discharge port 123. To discharge.
[0041]
When the push button 141 of the flow path switching valve 140 is released and pushed back to the raw water discharge position (FIGS. 48 to 51), the flow path switching valve 140 is opened and the cartridge of the flow path switching valve 140 is opened. The flow path communicating with the flow path 116a formed on the receiving outer surface side is opened, and the mixed water flowing into the grip 110 passes through the outer peripheral flow path 131 of the water purification cartridge 130, and the cartridge receiver 116 is formed in the head 120 by passing through the flow path 116a on the outer surface side of 116 through the opening 111d, the flow path 117 in the flow path forming member 118, and the flow path reaching the inside of the valve seat 142 via the opening 142a. And then discharged to the outside of the shower plate 121 via the straight discharge port 122 or the shower discharge port 123 according to the selection of the discharge switching valve 150.
After that, when the push button 141 of the flow path switching valve 140 is pressed from the outside of the gripping part 110 and pushed down again to the purified water discharge position, it returns to the case of the purified water discharge as described above and discharges the purified water. .
[0042]
Further, the operation of the discharge switching valve 150 can be operated independently of the operation of the flow path switching valve 140, and straight discharge and shower discharge can be arbitrarily set.
First, when the switching lever 151 is operated and rotated to the straight discharge side about the axis of the valve shaft 151a, the valve body 150a is disengaged from the position of the opening 127a of the straight discharge flow path forming member 127, and the collective passage member. The mixed water flowing out from 126 flows into the opening 127a of the straight discharge flow path forming member 127, passes through the straight discharge flow path 127b, and is discharged from the straight discharge port 122.
[0043]
Then, when the switching lever 151 is set to the straight discharge side, when the switching lever 151 is operated in the opposite direction and rotated to the shower discharge side about the axis of the valve shaft 151a, FIG. As shown in FIG. 5, the valve body 150a is positioned above the opening 127a of the straight discharge flow path forming member 127 to close the opening 127a, and the mixed water flowing out of the collective passage member 126 is blocked by the plate portion 150b of the valve body 150a. Rarely flows out around the straight discharge flow path forming member 127, and is discharged from the shower discharge port 123 through the shower discharge surface upstream space 120 c formed by the partition member 125 and the shower plate 121.
After that, when the switching lever 151 is operated and rotated to the straight discharge side around the axis of the valve shaft 151a, the straight discharge port 122 discharges as described above.
[0044]
Thereby, by pressing the push button 141 of the flow path switching valve 140 from the outside of the gripping part 110, it is possible to easily switch between the purified water discharge and the raw water discharge. When the water purification material 133 passes from the outer peripheral flow path 131 to the central space 132, the water is purified, and when the raw water is discharged, the mixed water that passes the surface side of the filter 134 is used to discharge the purified water. Accumulated accumulation on the surface of the filter is washed away, clogging is less likely to occur and deterioration of the water purification material 133 is prevented, and the water purification performance can be maintained at a high level for a long period of time.
In addition to this, since the discharge switching valve 150 is completely independent of the flow path switching valve 140, it is possible to select either straight discharge or shower discharge regardless of whether raw water or purified water is discharged. It can be discharged and four types of available forms can be selected.
[0045]
[Second Embodiment]
In the first embodiment, the outer peripheral side of the water quality purification cartridge is formed as a raw water flow path (flow path immediately before purification). However, in this second embodiment, the central space of the water quality purification cartridge is defined as the raw water flow path ( The case where it is formed as a flow path immediately before purification will be specifically described.
In the following description, the reference numerals of the respective members are identified as numbers in the 200s to identify the first embodiment, and members other than the members related to the configuration of the flow path switching valve are the same as those in the first embodiment. In addition, the number of 2 digits or less out of the numbers in the 200 series is the same, and the description is omitted.
[0046]
〔Constitution〕
The shower head 200 with a water purifying function includes, as shown in the cross-sectional views of FIGS. 52 to 54, a holding portion 210 having an end portion that can be attached to a mixing faucet or a hose provided in the mixing faucet (not shown), The head part 220 which can perform shower discharge is provided in the edge part on the opposite side to the mixing faucet connection side of the part 210.
[0047]
The grip part 210 is divided into a cylindrical part 211 directly connected to the head part 220 and a cylindrical part 212 on the side of the mixing faucet, and a screw coupling part is formed so that these can be detachably and integrally combined. The relay part 213 is formed so as to be separable and connectable.
By unscrewing the relay portion 213 and separating the cylindrical portion 211 and the cylindrical portion 212, the water purification cartridge 230 can be accommodated inside the grip portion 210 in a replaceable manner.
In addition, the end of the tube 211 close to the head has a built-in channel switching valve 240, and a push button that is the operation end of the channel switching valve 240 is projected from the outer surface of the tube to grip it. The channel switching valve 240 is formed so as to be operated from the outside of the unit 210.
In addition, a thick cylindrical hose connection portion 214 is provided at the end of the tube portion 212 on the side of the mixing faucet connection, and a hose attachment screw 215 is formed at the tip portion to facilitate attachment / detachment with the hose.
[0048]
The head 220 forms a space (cavity) 220a in which the mixed water flowing in from the gripping part 210 is retained by the head skin 220b, and the shower plate 221 having a discharge surface for uniformly discharging the mixed water is detachable. A straight discharge port 222 is provided at the center of the shower plate 221. A shower discharge port 223 is provided so as to surround the periphery of the shower plate 221, and a discharge switching valve 250 for switching between straight discharge and shower discharge is provided therein. A switching lever 251 serving as an operation end of the valve 250 is provided outside the shower plate 221.
[0049]
The water purification cartridge 230 is formed by forming a water purification material 233 mainly composed of activated carbon into a cylindrical shape having a long through-hole (central space portion 232) concentrically with the central axis in the axial direction. A filter 235 made of non-woven fabric, sponge, net, or the like is provided around, and a cylindrical portion for fitting in the central space portion and an outer peripheral surface fitting on the end portion positioned on the downstream side when viewed from the mixed water flow of the water purification material 233 An end cap 230a having a cylindrical portion, and an end portion having a cylindrical portion for fitting in the central space portion and a cylindrical portion for fitting on the outer peripheral surface at the end located on the upstream side. The cap 230b is fitted.
[0050]
A cylindrical cartridge receiver 216 for inserting and fixing the downstream end (head side) end of the water purification cartridge 230 is protruded from the cylindrical portion 211 located on the head side of the grip portion 210. A cylindrical cartridge receiver 217 protrudes from the end portion located on the upstream side of the inner surface of the cylindrical portion 212 located on the hose connection side.
An insertion end of an end cap 230a provided on the downstream side of the water purification cartridge 230 is inserted into the cartridge receiver 216 of the cylindrical portion 211, and is provided at an end located on the upstream side of the water purification cartridge 230. Both ends of the water purification cartridge 230 are assembled by screwing the relay portion 213 and assembling the tube portion 212 to the tube portion 211 so that the end cap 230b is fitted to the cartridge receiver 217 provided on the tube portion 212. The water purification cartridge 230 is accommodated substantially coaxially in the grip portion 210 with the portion centered and fixed in position.
[0051]
Of the flow paths formed by accommodating the water purification cartridge 230 in the grip portion 210, the outer peripheral flow path 231 of the water purification cartridge 230 is a part of the water purification flow path, and the center of the water purification cartridge 230 is The space 232 becomes a part of the raw water flow path. The flow path 216a on the outer peripheral side of the cartridge receiver 216 communicates with the outer peripheral flow path 231 of the water purification cartridge 230 to become a part of the water purification flow path, and the flow path (space) on the inner surface side of the cartridge receiver 216. 216b communicates with the central space 232 of the water purification cartridge 230 and becomes a part of the raw water flow path.
[0052]
A flow path switching valve 240 is built in the downstream side of the cartridge receiver 216, and an opening (flow path) communicating with the flow path 216 b on the inner surface side of the cartridge receiver 216 is formed on the side surface of the valve seat 242 of the flow path switching valve 240. To do.
The push button 241 that is an operation member of the flow path switching valve 240 is aligned with the center position of the push button 241 on the axis of the central axis of the switching valve at the built-in position of the flow path switching valve 240, and Project outward from the surface.
[0053]
As a result, when the push button 241 of the flow path switching valve 240 is pressed to discharge the purified water, the flow path switching valve 240 is closed and communicates with the flow path 216b formed on the inner surface side of the cartridge receiver 216. The flow path is closed, and the mixed water flowing into the grip portion 210 passes through the filter 235 and the water purification material 233 of the water purification cartridge 230 from the central space portion 232 of the water purification cartridge 230 to purify the water quality. However, it flows out into the outer peripheral side flow path 231, flows out into the space 220 a formed in the head 220 through the outer peripheral side flow path 216 a of the cartridge receiver 216, and thereafter, according to the selection of the discharge switching valve 250, The liquid is discharged from 220 a to the outside of the shower plate 221 through the straight discharge port 222 or the shower discharge port 223.
[0054]
Further, when the push button 241 of the flow path switching valve 240 is pushed back to discharge raw water, the flow path switching valve 240 is opened, and the flow communicating with the flow path 216 b formed on the inner surface side of the cartridge receiver 216. The channel is opened, and the mixed water flowing into the grip portion 210 passes through the central space portion 232 of the water purification cartridge 230 and passes through the flow path 216b on the inner surface side of the cartridge receiver 216 to the flow path switching valve 240. It flows into the valve seat, passes through the valve seat, flows out into the space 220a, and then discharges to the outside of the shower plate 221 through the straight discharge port 222 or the shower discharge port 223 according to the selection of the discharge switching valve 250. To do.
[0055]
A partition member 225 for partitioning the space 220a and the shower discharge surface upstream space 220c is provided on the downstream side of the space 220a formed inside the head 220 and upstream of the portion accommodating the discharge switching valve 250. The collective passage member 226 is provided at the center of the disk-like partition plate 225a of the partition member 225.
The valve body 250 a of the discharge switching valve 250 provided on the downstream side of the partition member 225 is disposed so that the valve body 250 a can be positioned directly below the collect passage member 226.
On the further downstream side of the position where the collective passage member 226 and the valve body 250a of the discharge switching valve 250 are arranged vertically, the straight discharge flow path forming member 227 communicating with the straight discharge port 222 formed in the shower plate 221. To form a straight discharge channel 227b.
[0056]
The discharge switching valve 250 is disposed immediately downstream of the partition member 225 with the valve body 250a slightly spaced from the collective passage member 226, and the lower surface of the valve body 250a is disposed on the straight discharge flow path forming member 227. It is arranged at a position closest to the opening 227a formed at the upper end so that it can be covered from the top as a lid of the straight discharge flow path forming member 227, and the valve body is operated by operating the switching lever 251. The valve body 250a can freely rotate in and out of the upper end of the straight discharge flow path forming member 227 in a range from 250a to a position immediately above the opening 227a until the entire valve body 250a is disengaged from the position of the opening 227a. The rotation angle of the switching lever 251 is set.
[0057]
As shown in FIGS. 55 to 58, the head portion 220 integrally protrudes the cylindrical portion 211 on the gripping portion side, and a cylindrical portion outer surface 213 a for fitting with the cylindrical portion 212 and a male screw are provided at the distal end portion of the cylindrical portion 211. 213b is formed on the outer surface side to form the male side of the relay portion 213, and the flow path switching valve incorporating portion 211a and the valve seat 242 are formed at an intermediate position between the relay portion 213 of the cylindrical portion 211 and the space 220a. On the discharge side of the head 220, the top part is formed in a curved surface, the main part is formed in a substantially cylindrical shape, and the head outer skin 220b is a hollow without any special projecting part inside. The partition plate, the discharge switching valve and the like can be accommodated.
[0058]
A cylindrical cartridge receiver 216 into which an end cap 230a on the downstream side of the water purification cartridge 230 can be fitted is partitioned between the upstream side and the downstream side of the cylindrical portion 211 on the inner surface side of the relay portion forming portion. The partition wall 211c is coaxially supported and arranged on the upstream surface of the partition wall 211c.
Further, on the downstream side of the partition wall 211c, a flow path switching valve built-in portion 211a for incorporating the flow path switching valve 240 and a cylindrical valve seat 242 formed for fitting the valve body are formed coaxially, and the flow path switching is performed. A part of the side surface of the valve built-in portion 211a is formed integrally with the partition wall 211c, and further, the side portions and the lower portion of the partition wall 211c are opened at positions on the outer side and the lower side of the valve seat 242. A flow path 218 is formed that communicates between the side and lower portion of the flow path 216 a on the receiving outer peripheral side and the outer side and the lower side of the valve seat 242.
[0059]
The flow path switching valve 240 for switching between raw water and purified water uses the same members as those used in the first and second embodiments for each member attached inside and outside the valve seat 242.
That is, a valve seat 242 fixed to the flow path switching valve incorporating portion 212a, a valve body 243 incorporated in the valve seat 242 and moved by the push button 241, a bottom surface of the valve seat 242 and a lower end of the valve body 243 A coil spring 244 that pushes back the valve body 243 when the pressing force of the push button 241 is released, and is interposed between the push button 241 and the valve body 243 in the axial direction of the valve body 243. And a valve body position switching mechanism 245 for changing the position.
[0060]
The valve seat 242 is formed in a cylindrical shape, has an inner diameter larger than the outer diameter of the valve body so that the valve body 243 can be fitted from the upper end, and has a reduced diameter so that the valve body does not pass through the lower end portion. It has an inner surface formed with a diameter portion, and has an outer peripheral edge at the upper end that has a shape opposite to that of the locking portion of the switching ring support member 245d at two equal intervals on the circumference, and locks the switching ring support member 245d. Locking portions 242b and 242b (see FIG. 54) to be formed are formed.
Raw water that has formed a flow path 219 that communicates between the cylindrical side surface that forms the valve seat 242 and the flow path 216b on the inner surface side of the cartridge receiver 216, and has passed through the central space 232 of the water purification cartridge 230 when the valve is opened. Can be introduced into the valve seat.
The flow path switching valve built-in portion 211a in which the flow path switching valve 240 is incorporated and the cylinder forming the valve seat 242 both have the same central axis as the central axis of the gripper 210. On the other hand, the moving direction of the valve body 243 that moves in the valve seat 242 is set to the crossing direction with respect to the central axis of the grip portion 210 toward the crossing direction.
[0061]
As a result, when the valve body 243 fitted in the valve seat 242 closes the valve flow path and the flow path switching valve 240 is closed when the valve is closed, the outer peripheral side from the central space 232 of the water purification cartridge 230 is closed. The liquid flows out into the flow path 231, and the flow path 216 a on the outer surface of the cartridge receiver and the purified water can flow out from the outer peripheral flow path 231 to the space 220 a of the head 220 through the flow path 218. On the other hand, when the valve body 243 opens the flow passage in the valve and the flow passage switching valve 240 is opened when the valve is opened, the cartridge receiving inner surface side from the central space portion 232 of the water purification cartridge 230 is opened. It flows out to the space 220a of the head 220 through the flow path 216b and the flow path 219.
[0062]
As shown in FIGS. 59 to 61, the tube portion 212 formed on the hose connection side so as to be separable from the tube portion 211 has a substantially cylindrical shape and is thickened outwardly from the outer end surface of the end portion on the hose connection side. A meat cylindrical hose connection portion 214 is coaxially projected, a hose attachment screw 215 is formed on the outer peripheral side of the tip portion, and provided on the inner surface side on the hose connection side of the water purification cartridge 230 on the upstream end surface 212b. A cylindrical cartridge receiver 217 having an inner dimension corresponding to the dimension of the small-diameter side fitting portion of the end cap 230b is protruded to fit the fitting portion of the end cap 230b when the water purification cartridge 230 is accommodated. So that the upstream end of the water purification cartridge 230 can be concentrically fixed.
[0063]
A relay portion is formed by forming a female screw 213c and a cylindrical inner surface 213d for fitting to the cylindrical outer surface 213a of the cylindrical portion 211 on the inner surface side at the end portion opposite to the end portion where the hose connecting portion 214 is provided. The female side of 213 is formed.
Further, a protruding portion 214a that serves as a positioning rib when fitted and supported in the holder portion of the faucet body protrudes on the outer peripheral side of the hose connecting portion 214.
In addition, the flow path switching valve 240, the discharge switching valve 250, and other flow paths and components related thereto are configured in the same manner as in the first embodiment.
[0064]
[Function and effect]
In the second embodiment configured as described above, the purified water and the raw water can be easily switched by pressing the push button 241 of the flow path switching valve 240 with a finger, and the switching between the purified water and the raw water is independent. In addition, the straight discharge and the shower discharge can be switched by rotating the switching lever 251 of the discharge switching valve 250.
[0065]
When the push button 241 of the flow path switching valve 240 is pressed and pushed down to the clean water discharge position (FIGS. 52 to 54), the flow path switching valve 240 is closed and the cartridge receiver 216 of the flow path switching valve 240 is closed. The flow channel communicating with the formed inner surface flow channel 216b is closed, and the mixed water flowing into the grip portion 210 passes through the filter 235 and the water purification material 233 from the central space 232 of the water purification cartridge 230. Then, while purifying the water, the water passes through the water purification material 233 and flows out to the outer peripheral side channel 231, and from the outer peripheral side channel 231 to the head 220 via the outer peripheral side channel 216 a and the channel 218. It flows into the formed space 220a and passes through the collective passage member 226 from the space 220a according to the selection of the discharge switching valve 250, and the straight discharge port 222 or Discharging from the shower discharge port 223 to the outside of the shower plate 221.
[0066]
When the push button 241 of the flow path switching valve 240 is released and pushed back to the raw water discharge position (FIGS. 62 to 64), the flow path switching valve 240 is opened and communicates with the flow path switching valve 240. The channel 219 to be opened is in an open state, and the mixed water flowing into the grip portion 210 passes through the central space 232 of the water purification cartridge 230 and flows from the channel 216b on the inner surface side of the cartridge receiver 216 to the channel 219. Through the flow path leading to the inside of the valve seat 242, it flows out into the space 220 a formed in the head 220, and the straight discharge port 222 or the shower discharge port 223 is made to flow according to the selection of the discharge switching valve 250. To the outside of the shower plate 221.
After that, when the push button 241 of the flow path switching valve 240 is pressed from the outside of the grip portion 210 and is pushed down again to the purified water discharge position, it returns to the case of the purified water discharge as described above and discharges the purified water. .
Moreover, the operation of the discharge switching valve 250 can be arbitrarily selected between the straight discharge and the shower discharge by operating similarly to the case of the first embodiment.
[0067]
In this way, by pressing the push button 241 of the flow path switching valve 240 from the outside of the grip portion 210, it is possible to easily switch between purified water discharge and raw water discharge. Purified when passing the water purification material 233 from the central space 232 of the cartridge 230 to the outer peripheral flow path 231, and when the raw water was discharged, it was collected during the purified water discharge by the mixed water passing through the surface side of the filter 235 Accumulated material on the filter surface is washed away, clogging is less likely to occur and deterioration of the water purification material 233 is prevented, and the water purification performance can be maintained at a high level for a long period of time.
In addition to this, since the discharge switching valve 250 is completely independent of the flow path switching valve 240, either straight discharge or shower discharge is selected regardless of whether raw water or purified water is discharged. It can be discharged and four types of available forms can be selected.
[0068]
[Third Embodiment]
In the first and second embodiments, a flow path switching valve for selecting discharge of raw water and purified water is provided on the downstream side of the water purification cartridge. In the third embodiment, on the upstream side of the water purification cartridge. Specifically, a flow path switching valve is provided, and raw water is introduced into the flow path formed on the outer peripheral side of the water purification cartridge and purified while passing from the outer peripheral side to the central space of the central part. Explained.
In the following description, the reference numerals of the respective members will be identified as the first and second embodiments by using numbers in the 300s, and the members other than the members related to the configuration of the flow path switching valve will be described in the first and second embodiments. The configuration is the same as that of the embodiment, the reference numerals are the same as the last two digits of the 300 series, and the description is omitted.
[0069]
〔Constitution〕
As shown in the external view of FIGS. 65 to 66, the shower head 300 with a water purifying function includes a gripping portion 310 having an end portion that can be attached to a mixing tap or a hose provided in the mixing tap, and the gripping portion 310. And a head portion 320 that is integrally formed at the end opposite to the mixed water faucet connection side and can discharge the shower.
[0070]
The gripping part 310 is divided into a cylindrical part 311 directly connected to the head 320 side and a cylindrical part 312 on the mixing faucet connection side, and can be detachably and integrally combined with the joint part of the cylindrical parts 311 and 312. A relay portion 313 having a screw coupling portion that can be formed is formed, and the screwing of the relay portion 313 is released to separate the tube portion 311 and the tube portion 312, thereby providing water purification in the grip portion 310. The cartridge 330 (see FIGS. 67 and 68) can be accommodated. Moreover, the cylindrical hose connection part 314 is provided in the edge part by the side of a mixing faucet connection, and the hose attachment screw 315 is formed in the front-end | tip part, and attachment / detachment with a hose is made easy. Further, a push button 341 that is an operation end of the flow path switching valve 340 is protruded from an end of the gripping section 310 on the hose attachment side, which is upstream of the water purification cartridge 330, and the flow path is formed from the outside of the gripping section 310. It forms so that the switching valve 340 can be operated.
[0071]
The head 320 has a curved top portion, a main portion formed in a substantially cylindrical shape, is not provided with a special protrusion inside, and is a space (cavity) in which the mixed water flowing in from the grip portion 310 stays. 320a (see FIGS. 67 and 68) is formed by a head skin 320b, and a removable shower plate 321 having a discharge surface for uniformly discharging mixed water is formed, and straight on the center of the shower plate 321 A discharge port 322 is provided, a shower discharge port 323 is provided so as to surround the periphery thereof, a discharge switching valve 350 for switching between straight discharge and shower discharge is provided, and a switching lever 351 serving as an operation unit of the discharge switching valve 350 is provided. It protrudes outside the shower plate 321.
[0072]
In this shower head 300 with a water purification function, as shown in FIGS. 67 to 69, the outer peripheral flow path 331 of the water purification cartridge 330 built in the grip portion 310 is a part of the raw water flow path, and the water purification cartridge 330 The central space 332 is used as a part of the purified water channel or the raw water channel.
The water purification cartridge 330 in this case includes a water purification material 333 mainly composed of activated carbon formed in a cylindrical shape by providing a long through hole (central space portion 332) concentrically with the central axis in the axial direction, and an outer periphery thereof. End caps 330a and 330b for concentrically fitting and fixing in the gripping portion are attached to each end on a filter 334 made of non-woven fabric, sponge or mesh on the surface.
[0073]
A cartridge receiver 316 formed in a cylindrical shape coaxial with the cylinder section 311 is provided on the inner head-side end surface of the cylinder section 311 located on the head section 320 side of the grip section 310, and the water quality of the cartridge receiver 316 is increased. By inserting the insertion end of the downstream end cap 330a provided on the purification cartridge 330, the downstream end of the water purification cartridge 330 can be centered and fixed in position.
Then, a cartridge receiver 317 formed in a cylindrical shape coaxial with the cylindrical portion 312 is provided on the wall surface on the downstream side of the flow path switching valve 340 disposed at the end located on the upstream side of the cylindrical portion 312. Inserting the end cap 330b on the upstream side (the hose connection side) of the water purification cartridge 330 by screwing the relay part 313 between the cylinder 311 and the cylinder part 312 and assembling the cylinder part 312 to the cylinder part 311. The end is fitted to the cartridge receiver 317, centered and fixed in position, and the water purification cartridge 330 is accommodated in the grip portion 310 substantially coaxially.
[0074]
As a result, the space 316a on the outer peripheral side of the cartridge receiver 316 communicates with the outer peripheral flow path 331 of the water purification cartridge 330 to become the closed end of the raw water flow path, and the flow path 316b on the inner surface side of the cartridge receiver 316 The water purification cartridge 330 communicates with the central space 332 to form a part of the purified water flow path and a part of the raw water flow path.
The flow path 317b on the inner surface side of the cartridge receiver 317 communicates with the central space portion 332 of the water purification cartridge 330 to form an end of the purified water flow path and an inlet of the raw water flow path. The outer peripheral side flow path 317 a of 317 communicates with the outer peripheral side flow path 331 of the water purification cartridge 330 to form an inlet portion of the raw water flow path.
[0075]
A partition member 325 for partitioning the space 320a and the shower discharge surface upstream space 320c is formed on the downstream side of the space 320a formed inside the head 320 and upstream of the portion accommodating the discharge switching valve 350. The collective passage member 326 is provided at the center of the disk-shaped partition plate 325a of the partition member 325.
The discharge switching valve 350 provided on the downstream side of the partition member 325 is disposed so that the valve body 350a can be positioned immediately below the collect passage member 326.
Further, on the further downstream side of the position where the collective passage member 326 and the valve body 350a of the discharge switching valve 350 are arranged above and below, a straight discharge channel is formed which communicates with the straight discharge port 322 formed in the shower plate 321. The member 327 is erected.
[0076]
As shown in FIGS. 70 to 73, the head portion 320 projects a cylindrical portion 311 on the gripping portion side, and a cylindrical portion 313a for centering at the time of coupling is formed on the outer peripheral surface of the projected cylindrical portion 311. A male screw 313b for screw coupling with the cylindrical portion 312 is formed on the distal end side of the relay portion 313, and an O-ring (see FIG. 67) necessary for preventing the relay portion 313 from leaking is formed at the axial base of the cylindrical portion 313a. An O-ring groove 313f for fitting the reference) is formed so as to form the male side of the relay portion 313.
A cylindrical cartridge receiver 316 that is coaxial with the cylindrical portion 311 that protrudes toward the cylindrical portion protrudes from the wall surface that forms the boundary between the head portion 320 and the cylindrical portion 311, and a space 316 a outside the cartridge receiver 316 is formed by the wall surface. The inside of the cartridge receiver 316 is opened, and the inside of the cartridge receiver 316 is formed as a flow path 316b between the head portion 320 and the cylindrical portion 311.
The head skin 320b forms a space in which the top of the head 320 is formed in a curved surface and the main part is formed in a substantially cylindrical shape, and no special projecting part is provided therein. A partition plate, a discharge switching valve and the like can be accommodated on the discharge side.
[0077]
As shown in FIGS. 74 to 78, the cylindrical portion 312 formed to be separable from the cylindrical portion 311 has a substantially cylindrical shape, and has an end surface 312b provided with a circular hole at the end on the hose connection side. A cylindrical hose connection portion 314 protrudes from the end face, a hose attachment screw 315 is formed at the tip thereof, and a protrusion serving as a positioning rib when fitted and supported on the holder portion of the faucet body on the outer peripheral side of the hose connection portion 314 The part 314a is provided in a projecting manner.
A female side of the relay portion 313 is formed at the downstream end of the cylindrical portion 312, a female screw 313 c and a fitting cylindrical inner surface 313 d are formed on the inner end side of the cylindrical portion 312, and the cylindrical portion 311 The grip portion 310 can be formed by screwing onto the male relay portion 313.
The upstream end of the cylindrical portion 312 is disposed so that one side surface is in contact with the end surface 312b, and the planar shape with the central axis in a direction substantially perpendicular to the central axis of the cylindrical portion 312 has a substantially square shape. The flow path switching valve built-in part 312a formed in the shape of a bottom square cylinder and the flow path switching valve built-in part 312a are arranged coaxially, and the upper end is located at the lower end of the flow path switching valve built-in part 312a. A bottomed cylindrical valve seat 342 formed for fitting a valve body is inserted through the bottom wall.
[0078]
And the bottomed cylindrical shape which formed the internal-diameter dimension according to the outer-diameter dimension of the edge part (insertion edge part) formed in the end cap 330b provided in the hose connection side of the water quality purification cartridge 330 The cartridge receiver 317 is arranged coaxially with the cylindrical portion 312 and the opening side is directed downstream, and the bottomed side of the cartridge receiver 317 is integrally formed with the outermost end surface of the flow path switching valve incorporating portion 312a. Form.
An opening 317c and an opening 342a are formed in the lower end portion of the cartridge receiver 317 and the lower end portion of the valve seat 342, respectively, and a rectangular tubular channel 312c that communicates between the opening 317c and the opening 342a is provided. A mixed water flow path is formed from the inside of the valve seat 342 to the flow path 317b formed on the inner surface side of the cartridge receiver 317 via the flow path 312c.
[0079]
The side circumferential surface of the valve seat 342 located below the bottom plate of the flow path switching valve incorporating portion 312a and located on the side of the end surface 312b of the cylindrical portion 312 has a relatively wide cut extending substantially halfway around the center. In the valve open state, the mixed water that has flowed into the cylindrical portion 312 from the hose connection side flows into the valve seat 342 from the opening 342a and flows out from the opening 342c. It passes through a flow path 317b formed on the inner surface side of the cartridge receiver 317 via 312c. Further, when the valve is closed, it does not flow into the valve seat 342 but passes through the flow path 317 a formed on the outer peripheral side of the cartridge receiver 317 via the outer peripheral side and the lower side of the valve seat 342.
[0080]
The flow path switching valve 340 for switching between raw water and purified water uses the same members as those used in the first and second embodiments for each member attached inside and outside the valve seat 342.
That is, the valve seat 342 fixed to the flow path switching valve assembly 312a, the valve body 343 incorporated in the valve seat 342 and moved by the push button 341, the bottom surface of the valve seat 342, and the lower end of the valve body 343 A coil spring 344 that pushes back the valve body 343 when the pressing force of the push button 341 is released, and is interposed between the push button 341 and the valve body 343 in the axial direction of the valve body 343. And a valve body position switching mechanism 345 for changing the position.
[0081]
The partition member 325 incorporated in the head 320 is fitted with a collective passage member 326 for shifting to the entrance to the shower discharge side or the straight discharge side at the center of the disc-shaped partition plate 325a. The shower plate 321 can be screwed to the lower side of the outer peripheral edge, and leakage can be prevented by an O-ring above the screw forming portion.
A shower plate 321 serving as a discharge surface forming member located on the downstream side of the partition member 325 is formed in a shape in which an outer peripheral edge is raised from a flat disk portion, and a straight discharge port 322 is formed at the center of the disk portion. The discharge switching valve 350 is passed through the shaft adjacent to the straight discharge port 322 and supported by the shaft, and the shower discharge is formed around the straight discharge port 322 on the surface excluding the straight discharge port 322 and the shaft support portion. A large number of small holes to be the outlets 323 are formed at substantially equal intervals.
[0082]
Further, a straight discharge flow path forming member 327 is provided above the straight discharge port 322, and a straight discharge flow path forming member 327 is erected at the center of the shower plate, so that a straight discharge side flow path (straight discharge The flow path 327b) and the flow path on the shower discharge side (shower discharge surface upstream space 320c) can be partitioned.
The straight discharge flow path forming member 327 standing at the center of the shower plate is formed in a cylindrical shape having an end whose upper edge is reduced in diameter toward the inner surface, and the inside of the cylindrical portion is used as the straight discharge flow path 327b. In addition, the opening 327a formed at the upper end is formed so that the opening diameter is smaller than the inner diameter of the cylindrical portion, so that the valve body 350a of the discharge switching valve 350 can be easily placed.
[0083]
The discharge switching valve 350 includes a switching lever 351 integrally provided with a valve shaft that passes through the shower plate 321 and is supported so as to be rotatable about an axis, a collect passage member 326, and a straight discharge flow path forming member 327. It is divided into a valve body 350a formed in a thin dish shape whose upper surface is formed in a shallow concave surface so that it can be arranged in a gap provided therebetween.
In the discharge switching valve 350, the valve body 350a is disposed immediately downstream with a slight gap from the collective passage member 326, and the lower surface of the valve body 350a is an opening formed at the upper end of the straight discharge flow path forming member 327. 327a is disposed at the nearest position so as to be able to come into contact with 327a so that it can be covered from the top as a lid of the straight discharge flow path forming member 327, and the valve body 350a is opened to the true of the opening 327a by the operation of the switching lever 351. The switching lever 351 is rotated so that the valve body 350a can freely rotate in and out of the upper end of the straight discharge flow path forming member 327 in a range from the upper position to the position where the entire valve body 350a is disengaged from the position of the opening 327a. Set the moving angle.
[0084]
[Function and effect]
In the third embodiment configured as described above, purified water and raw water can be switched by pressing the push button 341 of the flow path switching valve 340 provided at the end of the grip portion 310 on the hose connection side, In addition, the straight discharge and the shower discharge can be switched by rotating the switching lever 351 of the discharge switching valve 350 independently of the switching between the purified water and the raw water.
[0085]
Now, when the set position of the flow path switching valve 340 is set to the purified water discharge position (push-button pressed state) (FIGS. 65 to 69), the flow path switching valve 340 is closed and the gripper 310 is closed. The upstream side of the flow path 317b formed on the inner surface side of the cartridge receiver 317 provided on the upstream side is in a closed state, and the mixed water that has flowed into the grip portion 310 is the outer peripheral side flow path 331 of the water purification cartridge 330. Then, it passes through the filter 334 and the water purification material 333 and flows out into the central space 332 of the water purification material 333 while purifying the water, and is formed in the head 320 via the flow path 316b on the inner surface side of the cartridge receiver 316. Flow out into the space 320a and pass through the collective passage member 326 from the space 320a according to the selection of the discharge switching valve 350, and the straight discharge port 322 or the shower discharge port 32. To discharge more to the outside of the shower plate 321.
[0086]
In addition, when the push button 341 of the flow path switching valve 340 is released and pushed back to the raw water discharge position (push button protruding state) (FIGS. 79 to 83), the flow path switching valve 340 is opened and the cartridge is opened. The flow path communicating with the flow path 317b formed on the inner surface side of the receptacle 317 is opened, and the mixed water that has flowed into the grip portion 310 is opened from the opening 342a formed on the side peripheral surface of the valve seat 342. It flows into the seat 342 and flows out from the opening 342c formed in the lower end of the valve seat 342 to the flow path 317b formed on the inner surface side of the cartridge receiver 317 via the flow path 312c. 333 flows out into the space 320a formed in the head portion 320 through the central space portion 332 of 333 and the flow path 316b formed on the inner surface side of the cartridge receiver 316 provided on the downstream side, and the discharge switching valve According to the selection of 50, it is discharged from the straight discharge port 322 or a shower discharge port 323 through a set passage member 326 from the space 320a to the outside of the shower plate 321.
After that, when the push button 341 of the flow path switching valve 340 is pressed from the outside of the grip portion 310 and is pushed down again to the purified water discharge position, it returns to the case of the purified water discharge as described above and discharges the purified water. .
[0087]
Further, the operation of the discharge switching valve 350 can be operated independently of the operation of the flow path switching valve 340, and straight discharge and shower discharge can be arbitrarily set.
First, when the switching lever 351 is operated and rotated to the straight discharge side, the valve body 350a is disengaged from the position of the opening 327a of the straight discharge flow path forming member 327, and the mixed water flowing out from the collective passage member 326 is used for straight discharge. It flows into the opening 327a of the flow path forming member 327, passes through the straight discharge flow path 327b, and is discharged from the straight discharge port 322.
When the switching lever 351 is set to the straight discharge side and the switching lever 351 is operated in the opposite direction and rotated to the shower discharge side, as shown in FIG. Positioned above the opening 327a of the flow path forming member 327, the opening 327a is blocked, and the mixed water flowing out from the collective passage member 326 is blocked by the valve body 350a and flows out around the straight discharge flow path forming member 327. The liquid is discharged from the shower discharge port 323 via the shower discharge surface upstream space 320c formed by the partition member 325 and the shower plate 321.
Thereafter, when the switching lever 351 is operated and rotated to the straight discharge side, the discharge is performed from the straight discharge port 322 as described above.
[0088]
Accordingly, by pressing the push button 341 of the flow path switching valve 340 from the outside of the grip portion 310, it is possible to easily switch between the purified water discharge and the raw water discharge, and at the time of the purified water discharge, the mixed water is a water quality purification cartridge. When the water purification material 333 passes from the outer peripheral side flow path 331 of 330 to the central space part 332, it will be purified.
In addition, since the discharge switching valve 350 is completely independent of the flow path switching valve 340, either straight discharge or shower discharge can be selected regardless of whether raw water or purified water is discharged. Four types of available forms can be selected.
[0089]
[Fourth Embodiment]
In the third embodiment, the outer peripheral side of the water purification cartridge is formed as an upstream flow path before purification. In the fourth embodiment, a flow path switching valve is provided on the upstream side of the water purification cartridge. The case where the central space portion of the water purification cartridge is formed as the upstream flow path before purification will be specifically described.
In the following description, the reference numerals of the respective members are identified as numbers in the 400s to identify the third embodiment, and members other than the members related to the configuration of the flow path switching valve are the same as in the third embodiment. In addition, the same reference numerals are used for the last two digits of the 400 range, and the description is omitted.
[0090]
〔Constitution〕
As shown in the arrow cross-sectional views of FIGS. 84 to 86, the shower head 400 with a water purification function includes a gripping portion 410 having an end portion that can be attached to a not-shown mixing faucet or a hose provided in the mixing faucet, and this gripping A head 420 capable of performing shower discharge at the end of the portion 410 opposite to the mixing faucet connection side.
[0091]
The gripping part 410 is divided into a cylindrical part 411 directly connected to the head part 420 and a cylindrical part 412 on the mixed water faucet connection side, and can be detachably and integrally combined with the connecting part of both the cylindrical parts 411 and 412. The relay part 413 in which the screw coupling part is formed is formed. By releasing the screwing of the relay part 413 and separating the cylinder part 411 and the cylinder part 412, the water purification cartridge 430 can be accommodated inside the grip part 410.
Moreover, the cylindrical hose connection part 414 is provided in the edge part by the side of a mixing faucet connection, and the hose attachment screw 415 is formed in the front-end | tip part, and attachment / detachment with a hose is made easy. Further, a flow path switching valve 440 is provided on the upstream side of the water purification cartridge 430 at the end of the gripping portion 410 on the hose mounting side, and the push button 441 that is the operation end protrudes from the outer peripheral surface of the gripping portion. The channel switching valve 440 is formed so as to be operated from the outside of the portion 410.
[0092]
The head 420 has a curved top portion, a main portion formed in a substantially cylindrical shape, is not provided with a special protrusion inside, and is a space (cavity) in which the mixed water flowing in from the grip portion 410 stays. 420a is formed by a head skin 420b, and a detachable shower plate 421 having a discharge surface for uniformly discharging mixed water is formed, and a straight discharge port 422 is provided at the center of the shower plate 421. A shower discharge port 423 is provided so as to surround the periphery, and a discharge switching valve 450 for switching between straight discharge and shower discharge is provided, and a switching lever 451 serving as an operation portion of the discharge switching valve 450 is projected outside the shower plate 421. Deploy.
[0093]
In the shower head 400 with a water purification function, the central space 432 of the water purification cartridge 430 built in the gripping portion 410 is a part of the raw water flow path, and the outer peripheral flow path 431 of the water quality purification cartridge 430 is the purified water flow path or Used as part of the raw water flow path.
The water purification cartridge 430 in this case has a water purification material 433 mainly composed of activated carbon formed in a cylindrical shape by providing a long through hole (central space portion 432) concentrically with the central axis in the axial direction, and the center thereof. End caps 430a and 430b for concentrically fitting and fixing the position of the filter 435 made of non-woven fabric, sponge or net on the inner surface of the space 432 are attached to each end. It is a thing.
[0094]
The cylindrical part 411 located on the head side of the grip part 410 is provided with ribs 411b,. By inserting a downstream end cap 430a provided in the water purification cartridge 430 into the rib projecting position, the downstream end of the water purification cartridge 430 can be centered and fixed in position.
Then, a cartridge receiver 417 formed in a cylindrical shape coaxial with the cylinder portion 412 is provided on the downstream side of the flow path switching valve 440 disposed at the end located on the upstream side of the cylinder portion 412, and this cartridge receiver 417 is projected. A wall surface 418 that forms a flange that reaches the inner wall surface of the cylindrical portion 412 while being in contact with the downstream side of the flow path switching valve built-in portion 412a is provided at the outer peripheral end of the upstream side of the cylinder to partition the cylindrical portion 412 in the axial direction. The flow path inside and outside of the cartridge 430 is regulated, the relay part 413 between the cylinder part 411 and the cylinder part 412 is screwed, and the cylinder part 412 is assembled to the cylinder part 411, so that the upstream of the water purification cartridge 430 The insertion end of the end cap 430b on the side (mixing faucet connection side) is fitted into the cartridge receiver 417, centered and fixed in position, and the cartridge for water purification in the gripper 410 Houses 30 substantially coaxially.
[0095]
Thereby, the circumference | surroundings of the rib 411b arrangement | positioning location form a part of raw | natural water flow path while forming a part of purified water flow path.
The flow path 417b on the inner surface side of the cartridge receiver 417 communicates with the central space 432 of the water purification cartridge 430 to form an inlet portion of the raw water flow path for purification, and the flow path on the outer peripheral side of the cartridge receiver 417. 417a communicates with the outer peripheral flow path 431 of the water purification cartridge 430 to form a raw water flow path inlet on the downstream side of the flow switching valve.
[0096]
A partition member 425 for partitioning the space 420a and the shower discharge surface upstream space 420c is provided on the downstream side of the space 420a formed inside the head 420 and upstream of the portion accommodating the discharge switching valve 450. The collective passage member 426 is provided at the center of the disk-like partition plate 425a of the partition member 425.
The discharge switching valve 450 provided on the downstream side of the partition member 425 is disposed so that the valve body 450a can be positioned immediately below the collect passage member 426.
Further, on the further downstream side of the position where the collective passage member 426 and the valve body 450a of the discharge switching valve 450 are vertically arranged, a straight discharge flow path is formed which communicates with the straight discharge port 422 formed in the shower plate 421. The member 427 is erected.
[0097]
As shown in FIGS. 87 to 91, the head portion 420 projects the cylindrical portion 411 toward the gripping portion, and a cylindrical portion 413a for centering at the time of coupling is formed on the outer peripheral surface of the protruding cylindrical portion 411. A male screw 413b is formed on the distal end side of the relay portion 413 so as to be screw-coupled with the cylinder portion 412. Further, an O-ring (see FIG. An O-ring groove 413f into which the reference portion is fitted is formed so as to form the male side of the relay portion 413.
Three ribs 411b,..., 411b protrude from the inner wall on the cylinder part side at equal intervals on the circumferential wall surface that becomes the boundary between the head part 420 and the cylinder part 411. Each rib 411b sets the diameter of the inscribed circle in accordance with the outer diameter of the end cap 430a on the downstream side of the water purification cartridge 430, and the end cap 430a is supported by the tip surface of each rib 411b. As described above, a step contact portion 411c having a surface perpendicular to the axial direction for adjusting the height from the inner wall surface and suppressing the movement in the axial direction is provided, and has a two-step height. The support member is molded.
Then, the head skin 420b forms a space in which the top of the head 420 is formed in a curved surface and the main part is formed in a substantially cylindrical shape, and no special protruding part is provided therein. A partition plate, a discharge switching valve and the like can be accommodated on the discharge side.
[0098]
As shown in FIGS. 92 to 96, the cylindrical portion 412 formed so as to be separable from the cylindrical portion 411 has a substantially cylindrical shape and has an end face 412b provided with a circular hole at the end on the hose connection side. A cylindrical hose connection portion 414 protrudes from the end surface, a hose attachment screw 415 is formed at the tip thereof, and a protrusion that serves as a positioning rib when fitted and supported on the holder portion of the faucet body on the outer peripheral side of the hose connection portion 414 A portion 414a is provided to project.
A female side of the relay portion 413 is formed at the downstream end of the cylindrical portion 412, and a female screw 413c and a fitting cylindrical inner surface 413d are formed on the inner end side of the cylindrical portion 412 at the distal end side of the female screw forming portion. The grip portion 410 can be formed by screwing onto the male-side relay portion 413.
At the upstream end of the cylindrical portion 412, an end surface 412 b is disposed so that one side surface thereof is in contact with the cylindrical portion 412. The flow path switching valve built-in portion 412a formed in the shape of a bottom square cylinder and the flow path switching valve built-in portion 412a are arranged coaxially, and the upper end is located at the lower end of the flow path switching valve built-in portion 412a. A bottomed cylindrical valve seat 442 formed for fitting a valve body is inserted through the bottom wall.
[0099]
A bottomed cylindrical shape having an inner diameter dimension that matches the outer diameter dimension of the end edge portion (insertion end portion) formed in the end cap 430b provided on the upstream side of the water purification cartridge 430. The cartridge receiver 417 is arranged coaxially with the cylindrical portion 412 and the opening side is directed to the downstream side, and the bottomed side of the cartridge receiver 417 is formed integrally with the outermost end surface on the most downstream side of the flow path switching valve incorporating portion 412a. To do.
An opening 418a and an opening 442c are respectively provided at the lower end of the wall surface 418 and the lower end of the valve seat 442 located on the outer peripheral side of the cartridge receiver 417, and a rectangular tube-shaped flow communicating between the opening 418a and the opening 442c. A channel 412d is provided to form a mixed water channel from the inside of the valve seat 442 to the lower side of the channel 417a formed on the outer surface side of the cartridge receiver 417 via the channel 412d.
The side circumferential surface of the valve seat 442 located below the bottom plate of the flow path switching valve built-in portion 412a and located on the end surface 412b side of the cylindrical portion 412 has a relatively wide cut extending substantially halfway around the center. In the valve open state, the mixed water that has flowed into the cylindrical portion 412 from the hose connection side flows into the valve seat 442 from the opening 442a and flows out from the opening 442c. It passes through a flow path 417a formed on the outer surface side of the cartridge receiver 417 via 412d. When the valve is closed, the valve does not flow into the valve seat 442 but passes through the flow path 417 b formed on the inner surface side of the cartridge receiver 417 via the outer periphery of the valve seat 442.
[0100]
The flow path switching valve 440 for switching between raw water and purified water uses the same members as those used in the first and second embodiments for each member attached inside and outside the valve seat 442.
That is, the valve seat 442 fixed to the flow path switching valve assembly portion 412a, the valve body 443 incorporated in the valve seat 442 and moved by the push button 441, the bottom surface of the valve seat 442 and the lower end of the valve body 443 A coil spring 444 that pushes back the valve element 443 when the pressing force of the push button 441 is released, and is interposed between the push button 441 and the valve element 443 in the axial direction of the valve element 443. And a valve body position switching mechanism 445 for changing the position.
[0101]
The partition member 425 incorporated in the head 420 is fitted with a collective passage member 426 for shifting to the entrance to the shower discharge side or the straight discharge side at the center of the disc-shaped partition plate 425a. Then, the shower plate 421 can be screwed to the lower side of the outer peripheral edge, and leakage can be prevented by an O-ring on the upper side of the screw forming portion.
The shower plate 421 as a discharge surface forming member located on the downstream side of the partition member 425 is formed in a shape in which an outer peripheral edge is raised from a flat disk part, and a straight discharge port 422 is formed in the center part of the disk part. The discharge switching valve 450 is passed through the shaft adjacent to the straight discharge port 422 and supported by the shaft, and the shower discharge is formed around the straight discharge port 422 on the surface excluding the straight discharge port 422 and the shaft support portion. A large number of small holes serving as the outlets 423 are formed at substantially equal intervals.
[0102]
Further, a straight discharge flow path forming member 427 is provided above the straight discharge port 422, and a straight discharge flow path forming member 427 is erected in the center of the shower plate, so that a straight discharge side flow path (straight discharge The flow path 427b) and the flow path on the shower discharge side (shower discharge surface upstream space 420c) can be partitioned.
The straight discharge flow path forming member 427 standing at the center of the shower plate is formed in a cylindrical shape having an end whose upper edge is reduced in diameter toward the inner surface, and the inside of the cylindrical portion is used as the straight discharge flow path 427b. In addition, the opening 427a formed at the upper end is formed so that the opening diameter is smaller than the inner diameter of the cylindrical portion, so that the valve body 450a of the discharge switching valve 450 can be easily placed.
[0103]
The discharge switching valve 450 includes a switching lever 451 that is integrally provided with a valve shaft that passes through the shower plate 421 and is supported so as to be rotatable about an axis, a collect passage member 426, and a straight discharge flow path forming member 427. It is divided into a valve body 450a formed in a thin dish shape whose upper surface is formed in a shallow concave surface so that it can be arranged in a gap provided therebetween.
In the discharge switching valve 450, the valve body 450a is disposed immediately downstream with a slight gap from the collective passage member 426, and the lower surface of the valve body 450a is formed at the upper end of the straight discharge flow path forming member 427. It is arranged at the nearest position where it can come into contact with 427a so that it can be covered from the top as a lid of the straight discharge flow path forming member 427, and the valve body 450a can be directly connected to the opening 427a by the operation of the switching lever 451. The rotation of the switching lever 451 is performed so that the valve body 450a can freely rotate in and out of the upper end of the straight discharge flow path forming member 427 in a range from the upper position to the position where the entire valve body 450a is disengaged from the position of the opening 427a. Set the moving angle.
[0104]
[Function and effect]
In the fourth embodiment configured as described above, the purified water and the raw water can be switched by pressing the push button 441 of the flow path switching valve 440 provided at the end of the gripper 410 on the hose connection side, Independent of switching between purified water and raw water, it is possible to switch between straight discharge and shower discharge by rotating the switching lever 451 of the discharge switching valve 450.
[0105]
Now, when the setting position of the flow path switching valve 440 is set to the purified water discharge position (push button pressed state) (FIGS. 84 to 86), the flow path switching valve 440 is closed and the gripper 410 is closed. The upstream side of the flow path 417b formed on the inner surface side of the cartridge receiver 417 provided on the upstream side is in an open state, and the mixed water that has flowed into the gripper 410 passes through the flow path 417b and is used for the water purification cartridge 430. The central space portion 432 flows out from the central space portion 432 through the filter 435 and the water purification material 433, purifies the water quality, flows out into the outer peripheral flow path 431, and passes between the ribs 411b,. And flows out into the space 420a formed in the head 420, and passes through the collective passage member 426 from the space 420a according to the selection of the discharge switching valve 450, and the straight discharge port 422 or It is discharged from the shower discharge port 423 to the outside of the shower plate 421.
[0106]
In addition, when the push button 441 of the flow path switching valve 440 is released and pushed back to the raw water discharge position (push button protruding state) (FIGS. 97 to 99), the flow path switching valve 440 is opened, and the valve The flow path 412d communicating from the seat 442 to the flow path 417a formed on the outer peripheral side of the cartridge receiver 417 is opened, and the mixed water flowing into the gripping portion 410 is formed on the side peripheral surface of the valve seat 442. From the opening 442a into the valve seat 442, and from the opening 442c formed in the lower end of the valve seat 442 to the channel 417a formed on the outer peripheral side of the cartridge receiver 417 via the channel 412d. Further, it passes between the ribs 411 b from the outer peripheral side flow path 431 of the water purification cartridge 430 and flows out into the space 420 a formed in the head 420, according to the selection of the discharge switching valve 450. Through a set passage member 426 from the space 420a to discharge from the straight discharge port 422 or a shower discharge port 423 to the outside of the shower plate 421.
After that, when the push button 441 of the flow path switching valve 440 is pressed from the outside of the gripping portion 410 and pushed down again to the purified water discharge position, it returns to the case of the purified water discharge as described above and discharges the purified water. .
[0107]
Further, the operation of the discharge switching valve 450 can be operated independently of the operation of the flow path switching valve 440, and straight discharge and shower discharge can be arbitrarily set.
First, when the switching lever 451 is operated and rotated to the straight discharge side, the valve body 450a is disengaged from the position of the opening 427a of the straight discharge flow path forming member 427, and the mixed water flowing out from the collecting passage member 426 is used for straight discharge. It flows into the opening 427a of the flow path forming member 427, passes through the straight discharge flow path 427b, and is discharged from the straight discharge port 422.
[0108]
When the switching lever 451 is set to the straight discharge side and the switching lever 451 is operated in the opposite direction and rotated to the shower discharge side, the valve body 450a is discharged straight as shown in FIG. Positioned above the opening 427a of the flow path forming member 427, the opening 427a is blocked, and the mixed water flowing out from the collecting passage member 426 is blocked by the valve body 450a and flows out around the straight discharge flow path forming member 427. The liquid is discharged from the shower discharge port 423 via the shower discharge surface upstream space 420 c formed by the partition member 425 and the shower plate 421.
Thereafter, when the switching lever 451 is operated and turned to the straight discharge side, the discharge is made from the straight discharge port 422 as described above.
[0109]
Thereby, by pressing the push button 441 of the flow path switching valve 440 from the outside of the grip portion 410, it is possible to easily switch between purified water discharge and raw water discharge, and at the time of purified water discharge, the mixed water is a water quality purification cartridge. When the water purification material 433 passes from the central space 432 of the 430 to the outer peripheral flow path 431, it is purified, and when the raw water is discharged, it passes through the outer peripheral flow path 431 of the water purification cartridge 430. Therefore, it is possible to switch between clean water discharge and raw water discharge with good operability.
In addition, since the discharge switching valve 450 is completely independent of the flow path switching valve 440, either straight discharge or shower discharge is selected regardless of whether raw water or purified water is discharged. Four types of available forms can be easily selected.
[0110]
【The invention's effect】
As above Clearly Such a shower head with a water purification function is formed integrally with a head having a shower discharge port and a gripping portion for accommodating the water purification cartridge in an exchangeable manner, and upstream or downstream of the water purification cartridge housing location of the gripping portion. A flow path switching valve for switching between purified water and raw water is provided on the side, and this flow path switching valve is formed as a parallel movement type shutoff valve provided with a valve body that moves in a direction crossing the central axis of the gripping portion. A push button type operation portion of the flow path switching valve is disposed outside the position of the path switching valve so that the flow path switching valve can be operated from the outside, and further, the flow path is disposed upstream of the discharge port of the head. A discharge switching valve that functions independently of the path switching valve to switch between shower discharge and straight discharge is provided, and this discharge switching valve is formed as a shut-off valve in which the valve element moves in the direction crossing the valve seat flow path Vomiting By disposing the operation part of the discharge switching valve outside the vicinity of the switching valve arrangement position so that the discharge switching valve can be operated from the outside, water can be easily purified by pressing the push button of the flow path switching valve. It is possible to switch between raw water and easy to switch between shower discharge and straight discharge by operating the operation part of the discharge switching valve. The shape of the member can be simple, and the flow path switching mechanism is simplified, making it easy to handle and manufacture, and reducing the cost.
[0111]
Also, The present invention The shower head with a water purification function according to the present invention includes a cylindrical valve seat in which the flow path switching valve is fixed to the grip portion, and a valve that is fitted in the valve seat and moves in the axial direction of the cylindrical valve seat. And switching between purified water and raw water easily by pressing the push button of the flow path switching valve. Therefore, the operability is good, the shape of the member is simple, the flow path switching mechanism is simplified, and it is easy to handle and manufacture.
Also, The present invention The shower head with a water purifying function according to the present invention can be simplified and made compact by providing a filter on the outer peripheral surface of the water purification cartridge and forming a purification flow path that passes from the outer peripheral side to the inner surface side. The structure of the gripping part becomes simple and more contents of the water purification material can be stored. In addition, when the outer peripheral flow path is formed as a flow path shared by both raw water discharge and purified water discharge, solid substances that cause clogging accumulated during the clean water discharge are washed away during the raw water discharge. It is possible to prevent clogging and to prolong the life of the water purification cartridge.
[0112]
Also, The present invention The shower head with a water purification function according to the present invention can be simplified and made compact by providing a filter on the inner surface of the cartridge for water purification and forming a purification channel that passes from the inner surface side to the outer peripheral surface side. The structure of the gripping part becomes simple and more contents of the water purification material can be stored. In addition, when the flow path on the inner surface side is formed as a flow path that is shared by both raw water discharge and purified water discharge, the solid substances that cause clogging accumulated during the clean water discharge are washed away during the raw water discharge. It is possible to prevent clogging and to prolong the life of the water purification cartridge.
Also, The present invention In the shower head with a water purification function according to the present invention, the discharge switching valve is formed as a rotary shut-off valve that rotates the valve body around an axis parallel to the valve seat flow path. The housing space can be compressed in the direction of the flow path, and the size of the head can be further reduced.
Also, The present invention In the shower head with a water purifying function according to the present invention, the plate surface of the valve body is oriented substantially perpendicular to the valve shaft of the discharge switching valve, and the plate surface is arranged at a position spaced from the valve shaft via an arm portion. By forming the valve body as a rotary shut-off valve that rotates about the valve shaft, the movement distance of the valve body with respect to the rotation angle of the valve body can be greatly increased, and the valve body is moved away from the valve seat by the separation movement. It is possible to remove the valve body from the valve seat with a small rotation angle when it is separated from the valve seat, making the operation of the valve body provided in the narrow accommodation space effective, and the mixed water output direction It is possible to effectively switch between shower discharge and straight discharge.
[Brief description of the drawings]
FIG. 1 is a side view showing a shower head with a water purification function according to a first embodiment of the present invention.
FIG. 2 is a plan view showing the shower head with the water purification function.
FIG. 3 is a side cross-sectional view (a view taken along the line B-B in FIG. 2) showing the shower head with the water purification function of the above in a state when water is discharged.
FIG. 4 is a plan cross-sectional view (a view taken along the line AA of FIG. 1) showing the shower head with the water purification function same as above when the purified water is discharged.
FIG. 5 is a transverse cross-sectional view (a view taken along the line CC in FIG. 1) showing the position of the flow path switching valve in the state when water is discharged from the shower head with the water purification function.
FIG. 6 is an exploded perspective view showing a flow path switching valve assembled to the shower head with the water purification function.
FIG. 7 is an upper plan view showing the head of the shower head with the water purification function.
FIG. 8 is a lower plan view showing the head of the shower head with the water purification function.
FIG. 9 is a side cross-sectional view (a DD arrow view of FIG. 7) showing the head of the shower head with a water purification function.
FIG. 10 is a cross-sectional plan view (as viewed in the direction of arrows EE in FIG. 9) at the inflow position of the flow path switching valve formed at the head of the shower head with the water purification function.
FIG. 11 is a transverse cross-sectional view (a view taken along the line FF in FIG. 9) at the position of a partition wall formed between the head of the shower head with a water purification function and the cylinder part of the gripping part.
12 is a transverse cross-sectional view (a view taken along the line GG in FIG. 9) at a position where a flow path switching valve is provided, which is formed at the head of the shower head with a water purification function.
FIG. 13 is an enlarged plan view showing a push button of a flow path switching valve in the shower head with the water purification function.
14 is a side cross-sectional view (HH arrow view of FIG. 13) showing an enlarged view of the push button of the flow path switching valve in the shower head with the water purification function same as above.
FIG. 15 is an enlarged front sectional view (II arrow view in FIG. 13) showing the push button of the flow path switching valve in the shower head with the water purification function same as above.
FIG. 16 is an enlarged front view showing the valve body of the flow path switching valve in the shower head with the water purification function.
FIG. 17 is an enlarged side view of the valve body of the flow path switching valve in the shower head with the water purification function.
FIG. 18 is an upper plan view showing an enlarged valve body of the flow path switching valve in the shower head with the water purification function.
FIG. 19 is an enlarged bottom plan view showing the valve body of the flow path switching valve in the shower head with the water purification function.
FIG. 20 is an enlarged side cross-sectional view (a view taken along the line JJ in FIG. 16) showing the valve body of the flow path switching valve in the shower head with the water purification function.
FIG. 21 is an explanatory view showing, in an enlarged manner, a first switching top of a valve body position switching mechanism in a shower head with a water purification function, wherein (A) is a side view, (B) is a front view, and (C) is a rear view. Front view, (D) is an upper plan view, and (E) is a lower plan view.
FIG. 22 is an explanatory view showing, in an enlarged manner, a second switching top of the valve body position switching mechanism in the shower head with the water purification function, wherein (A) is a side view, (B) is a rear front view, and (C) is a rear view. Upper plan view, (D) is a lower plan view.
FIG. 23 is an explanatory diagram showing an enlarged view of the switching ring of the valve body position switching mechanism in the shower head with the water purification function, wherein (A) is a side view, (B) is a rear front view, and (C) is an upper plane. FIG. 4D is a lower plan view, and FIG. 4E is a front cross-sectional view (a view taken along the line KK in FIG. 23C).
FIG. 24 is an enlarged front view showing the switching ring support member of the valve body position switching mechanism in the shower head with the water purification function.
FIG. 25 is an upper plan view showing, on an enlarged scale, a switching ring support member of the valve body position switching mechanism in the shower head with the water purification function.
FIG. 26 is a bottom plan view showing, in an enlarged manner, a switching ring support member of the valve body position switching mechanism in the shower head with the water purification function same as above.
27 is a side cross-sectional view (L-L arrow view of FIG. 25) showing an enlarged view of the switching ring support member of the valve body position switching mechanism in the shower head with the water purification function same as above.
FIG. 28 is a plan view showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 29 is a front view showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 30 is a rear front view showing the holding portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 31 is a longitudinal sectional view (viewed in the direction of arrows M-M in FIG. 28) showing the gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 32 is an upper plan view showing a partition member in the shower head with the water purification function.
33 is a side cross-sectional view (a view taken along the line NN in FIG. 32) showing a partition member in the shower head with the water purification function same as above.
FIG. 34 is a lower plan view showing a partition member in the shower head with the water purification function.
FIG. 35 is an upper plan view showing, in an enlarged manner, a collecting passage member in the shower head with the water purification function same as above.
36 is a side cross-sectional view (a view taken along the line OO in FIG. 35) showing an enlarged view of the collective passage member in the shower head with the water purification function same as above.
FIG. 37 is an enlarged bottom plan view of the collective passage member in the shower head with the water purification function same as above.
FIG. 38 is an upper plan view showing a shower plate in the shower head with a water purification function same as above.
FIG. 39 is a left side view showing a shower plate in the shower head with a water purification function same as above.
FIG. 40 is a bottom plan view showing a shower plate in the shower head with a water purification function same as above.
41 is a side cross-sectional view (a view taken along the line PP in FIG. 38) showing a shower plate in the shower head with the water purification function same as above.
FIG. 42 is an upper plan view showing a straight discharge flow path forming member in the shower head with a water purification function same as above.
FIG. 43 is a bottom plan view showing a straight discharge flow path forming member in the shower head with the water purification function same as above.
44 is a longitudinal sectional view (QQ arrow view of FIG. 42) showing a straight discharge flow path forming member in the shower head with the water purification function same as above.
45 is an explanatory view showing a switching lever of the discharge switching valve in the shower head with the water purification function, wherein (A) is a side view, (B) is a front view, (C) is a rear front view, and (D) is a rear view. Upper plan view, (E) is a lower plan view.
46 is an explanatory view showing a valve body of a discharge switching valve in the shower head with a water purification function same as above, (A) is a side view, (B) is a front view, (C) is a rear front view, and (D) is a rear view. Upper plan view, (E) is a lower plan view.
47 is a side cross-sectional view showing the valve body of the discharge switching valve in the shower head with the water purification function (the view taken along the line RR in FIG. 46D).
FIG. 48 is a side view showing the shower head with a water purification function same as above when discharging raw water.
49 is a side cross-sectional view (corresponding to a view taken along the line BB in FIG. 2) showing the shower head with the water purification function same as above when discharging raw water.
FIG. 50 is a plan sectional view (a view taken along the line AA in FIG. 48) showing the shower head with the water purification function same as above when the raw water is discharged.
FIG. 51 is a cross-sectional view (a view taken along the line CC in FIG. 48) at the position of the flow path switching valve showing the shower head with the water purification function same as in the state of discharging raw water.
FIG. 52 is a side cross-sectional view (a view corresponding to the arrow BB in FIG. 2) showing a state during water purification discharge in the shower head with a water purification function of the second embodiment of the present invention.
FIG. 53 is a plan sectional view (a view corresponding to an arrow AA in FIG. 1) showing a state when water is discharged in the shower head with the water purification function same as above.
FIG. 54 is a cross-sectional view (corresponding to a CC arrow in FIG. 1) showing the position of the flow path switching valve in the shower head with the water purification function same as above.
FIG. 55 is an upper plan view showing the head of the shower head with the water purification function.
FIG. 56 is a lower plan view showing the head of the shower head with the water purification function.
FIG. 57 is a side cross-sectional view (a DD arrow view of FIG. 55) showing the head of the shower head with a water purification function same as above.
FIG. 58 is a plan sectional view showing the head of the shower head with a water purification function, as seen from the direction of the arrows EE in FIG. 57.
FIG. 59 is an upper plan view showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 60 is a front view showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
61 is a side cross-sectional view (a view taken along the line FF in FIG. 59) showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
62 is a side cross-sectional view (corresponding to a view taken along the line BB in FIG. 2) showing the shower head with the water purification function same as above when discharging raw water.
FIG. 63 is a plan sectional view (corresponding to the arrow AA in FIG. 1) showing the shower head with the water purification function same as above when discharging raw water.
FIG. 64 is a transverse cross-sectional view (corresponding to the CC arrow in FIG. 1) showing the position of the flow path switching valve in the state when the raw water discharge of the shower head with the water purification function is the same.
FIG. 65 is a side view showing a shower head with a water purification function according to a third embodiment of the present invention.
Fig. 66 is a plan view showing the shower head with the water purification function.
67 is a side cross-sectional view (a view taken along the line BB in FIG. 66) showing the shower head with the water purification function same as above when the purified water is discharged.
68 is a plan sectional view showing the shower head with the water purification function as in the state of discharging purified water (a view taken along the line AA in FIG. 65).
FIG. 69 is a transverse cross-sectional view (a view taken along the line CC in FIG. 65) showing the shower head with the water purification function same as the flow path switching valve in a state when water is discharged.
FIG. 70 is an upper plan view showing the head of the shower head with the water purification function.
FIG. 71 is a lower plan view showing the head of the shower head with the water purification function.
72 is a side cross-sectional view (a DD view of FIG. 70) showing the head of the shower head with a water purification function same as above. FIG.
Fig. 73 is a plan sectional view showing the head of the shower head with a water purification function (the view taken along the line EE in Fig. 72).
FIG. 74 is a plan view showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 75 is a front view showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
76 is a side cross-sectional view (a view taken along the line FF in FIG. 74) showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
77 is a cross-sectional plan view (as viewed in the direction of arrows GG in FIG. 76) showing the gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 78 is a longitudinal sectional view (a view taken along the line HH in FIG. 74) showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
Fig. 79 is a side view showing the shower head with the water purification function same as above when discharging raw water.
Fig. 80 is a plan view showing the shower head with the water purification function same as above when discharging raw water.
81 is a side cross-sectional view (a view taken along the line BB in FIG. 80) showing the shower head with a water purification function same as above when discharging raw water.
Fig. 82 is a plan sectional view showing the shower head with the water purification function same as above when discharging raw water (a view taken along the line A-A in Fig. 79).
83 is a transverse cross-sectional view (a view taken along the line CC in FIG. 79) showing the position of the flow path switching valve when the raw water discharge of the shower head with the water purification function is the same.
FIG. 84 is a side cross-sectional view (corresponding to a view taken along the line BB in FIG. 66) showing a state when water is discharged in the shower head with a water purification function according to the fourth embodiment of the present invention.
FIG. 85 is a plan sectional view (a view corresponding to an arrow AA in FIG. 65) showing a state when water is discharged in the shower head with the water purification function same as above.
FIG. 86 is a transverse cross-sectional view (corresponding to the CC arrow in FIG. 65) showing the state when water is discharged in the shower head with the water purification function same as above at the position of the flow path switching valve.
87 is an upper plan view showing the head of the shower head with the water purification function same as above. FIG.
FIG. 88 is a lower plan view showing the head of the shower head with the water purification function.
Fig. 89 is a rear front view showing the head of the shower head with the water purification function same as above.
90 is a side cross-sectional view (a DD arrow view of FIG. 87) showing the head of the shower head with a water purification function same as above.
Fig. 91 is a plan sectional view showing the head of the shower head with a water purification function (the view taken along the line E-E in Fig. 90).
FIG. 92 is a plan view showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 93 is a front view showing a gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 94 is a side cross-sectional view (a view taken along the line FF in FIG. 92) showing the gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 95 is a plan sectional view (a view taken along the line GG in FIG. 94) showing the gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 96 is a transverse cross-sectional view (a view taken along the line HH in FIG. 92) showing the gripping portion on the mixed faucet connection side in the shower head with the water purification function same as above.
FIG. 97 is a side cross-sectional view (corresponding to a view taken along the line BB in FIG. 66) showing the state of the shower head with the water purification function when discharging raw water.
FIG. 98 is a plan cross-sectional view (corresponding to an arrow AA in FIG. 65) showing a state of the shower head with the water purification function when discharging raw water.
FIG. 99 is a transverse cross-sectional view (corresponding to a CC arrow view of FIG. 65) showing the position of the flow path switching valve in the state when the raw water discharge of the shower head with the water purification function is the same.
[Explanation of symbols]
100, 200, 300, 400 Shower head with water purification function
110, 210, 310, 410 gripping part
111, 112, 211, 212, 311, 312, 411, 412
111a, 211a, 311a, 411a Flow path switching valve built-in part
111c, 211c partition
111d, 111e opening
112a, 411b rib
112b, 212b End face
113, 213, 313, 413 Relay section
113a, 213a, 313a, 413a Cylindrical outer surface
113b, 213b, 313b, 413b Male thread
113c, 213c, 313c, 413c female thread
113d, 213d, 313d, 413d Cylindrical inner surface
114, 214, 314, 414 Hose connection
114a, 214a, 314a, 414a Projection
115, 215, 315, 315 Hose mounting screw
116, 216, 217, 316, 317, 417 Cartridge receptacle
116a, 216a, 316a (outer peripheral side) flow path
116b, 216b, 316b (inner surface side) flow path
120, 220, 320, 420 head
120a, 220a, 320a, 420a space (cavity)
120b, 220b, 320b, 420b Head skin
120c, 220c, 320c, 420c Shower discharge surface upstream space (or discharge switching valve accommodation space)
121,221,321,421 Shower plate
122, 222, 322, 422 Straight outlet
123, 223, 323, 423 Shower outlet
124 Shaft hole
125,225,325,425 partition member
126,226,326,426 Assembly passing member
127, 227, 327, 427 Straight discharge flow path forming member
127a, 227a, 327a, 427a opening
127b, 227b, 327b, 427b Straight discharge flow path
130, 230, 330, 430 Water purification cartridge
130a, 130b, 230a, 230b, 330a, 330b, 430b End cap
131, 231, 331, 431 outer peripheral side flow path
132,232,332,432 Central space
133, 233, 333, 433 Water purification material
134,334,235,435 filters
140,240,340,440 Channel switching valve
141,241,341,441 push buttons
141a Guide groove
141b Engagement part
141c recess
142,242,342,442 Valve seat
142a, 342a, 342c, 442a, 442c Opening
142b, 242b, 342b, 442b Locking part
143, 243, 343, 443 Valve body
143a body
143b O-ring groove
143c Y ring groove
143d recess
143e cylindrical protrusion
143f Cylindrical protrusion
143g recess
143h Locking arm
143i Locking part
143j, 143k
143m, 143n rib
144,244,344,444 coil spring
145, 245, 345, 445 Valve body position switching mechanism
145a 1st switching top
145b 2nd switching top
145c switching ring
145d Switching ring support member
146 O-ring
147 Y ring (or U ring)
150, 250, 350, 450 Discharge switching valve
150a, 250a, 350a, 450a Valve body
150b pan
150c arm part
150d fitting hole
150e Shaft coupling part
151,251,351,451 switching lever
151a Valve stem
151b Lever part
151c Finger hook
151d recess
151e Elastic locking part
217a, 317a, 417a (outer side) flow path
217b, 317b, 417b (inner side) flow path
218, 219, 312c, 412d flow path

Claims

A head portion having a shower discharge port and a grip portion for accommodating the water purification cartridge in a replaceable manner are integrally formed, and the water purification cartridge is formed with a purification flow path extending from the outer peripheral surface side to the inner surface side, A flow path switching valve for switching between purified water and raw water is provided upstream or downstream of the water purification cartridge housing location of the gripping portion, and the flow path switching valve moves in a direction crossing the central axis of the gripping portion. A parallel movement type shut-off valve provided with a body and a push button type operation portion of the flow path switching valve arranged outside the flow path switching valve arrangement position so that the flow path switching valve can be operated from the outside. In addition, a discharge switching valve that functions independently of the flow path switching valve and switches between shower discharge and straight discharge is provided upstream of the discharge port of the head, and the discharge switching valve is connected to the valve seat flow path. Valve body in cross direction A shower head with a water purifying function, wherein the shower head is formed as a moving shut-off valve and has an operation portion of the discharge switching valve arranged outside the vicinity of the discharge switching valve arrangement position so that the discharge switching valve can be operated from the outside. .

The flow path switching valve has a cylindrical valve seat fixed to the grip portion, and a valve body that is fitted in the valve seat and moves in the axial direction of the cylindrical valve seat. The shower head with a water purifying function according to claim 1, wherein any one of the above is formed as a flow path passing through the inside of the valve seat.

Water purification function shower head according to claim 1 wherein the said water purification cartridge, characterized in that the filter was only set to the outer peripheral surface.

A head having a shower discharge port and a gripping part for accommodating the water purification cartridge in an exchangeable manner are integrally formed, and the water purification cartridge is provided with a filter on the inner surface, and the purification flow that passes from the inner surface side to the outer peripheral surface side. A flow path switching valve is formed on the upstream side or downstream side of the water purification cartridge housing location of the gripping portion, and the flow path switching valve is provided with respect to the central axis of the gripping portion. It is formed as a parallel movement type shut-off valve provided with a valve body that moves in the crossing direction, and a push button type operation part of the flow path switching valve is arranged outside the flow path switching valve arrangement position to externally connect the flow path switching valve. Further, a discharge switching valve that functions independently of the flow path switching valve and switches between shower discharge and straight discharge is provided on the upstream side of the discharge port of the head, and the discharge switching valve is provided as a valve. Seat channel On the other hand, it is formed as a shut-off valve in which the valve body moves in the intersecting direction, and the operation part of the discharge switching valve is arranged outside the vicinity of the position where the discharge switching valve is arranged, so that the discharge switching valve can be operated from the outside. water purification function shower head is characterized.

The shower head with a water purifying function according to claim 1, wherein the discharge switching valve is formed as a rotary shut-off valve that rotates the valve body about an axis parallel to the valve seat flow path.

The discharge switching valve is arranged so that the plate surface of the valve body is substantially perpendicular to the valve shaft, and the plate surface is disposed at a position spaced apart from the valve shaft via an arm portion, and the valve body is rotated around the valve shaft. The shower head with a water purifying function according to claim 5, wherein the shower head is formed as a rotary shut-off valve that rotates in a straight line.